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Vse Corp – ‘10-K’ for 12/31/19 – ‘EX-101.LAB’

On:  Monday, 3/9/20, at 10:33am ET   ·   For:  12/31/19   ·   Accession #:  102752-20-16   ·   File #:  0-03676

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  As Of               Filer                 Filing    For·On·As Docs:Size

 3/09/20  Vse Corp                          10-K       12/31/19   87:8.5M

Annual Report   —   Form 10-K   —   Sect. 13 / 15(d) – SEA’34
Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: 10-K        Vse Corporation 2019 Form 10-K                      HTML    765K 
 2: EX-4.2      Exhibit 4.2 Description of Securities Registered    HTML     33K 
 3: EX-21.1     Exhibit 21.1 Subsidiaries of the Registrant         HTML     26K 
 4: EX-23.1     Exhibit 23.1 Consent of Independent Registered      HTML     24K 
                Public Accounting Firm                                           
 5: EX-23.2     Exhibit 23.2 Consent of Independent Registered      HTML     25K 
                Public Accounting Firm                                           
 6: EX-31.1     Exhibit 31.1 Section 302 CEO Certification          HTML     31K 
 7: EX-31.2     Exhibit 31.2 Section 302 CFO and Pao Certification  HTML     30K 
 8: EX-32.1     Exhibit 32.1 Section 906 CEO Certification          HTML     25K 
 9: EX-32.2     Exhibit 32.2 Section 906 CFO and Pao Certification  HTML     25K 
46: R1          Document and Entity Information                     HTML     57K 
71: R2          Consolidated Balance Sheets                         HTML    113K 
62: R3          Consolidated Balance Sheets (Parenthetical)         HTML     33K 
18: R4          Consolidated Statements of Income                   HTML     80K 
45: R5          Consolidated Statements of Comprehensive Income     HTML     42K 
69: R6          Consolidated Statements of Stockholders' Equity     HTML     61K 
60: R7          Consolidated Statements of Stockholders' Equity     HTML     26K 
                (Parenthetical)                                                  
20: R8          Consolidated Statements of Cash Flows               HTML    109K 
43: R9          Nature of Business and Significant Accounting       HTML     90K 
                Policies                                                         
34: R10         Acquisition                                         HTML     66K 
28: R11         Revenue Recognition                                 HTML     99K 
50: R12         Receivables and Unbilled Receivables                HTML     35K 
80: R13         Other Current Assets and Other Assets               HTML     26K 
33: R14         Property and Equipment                              HTML     40K 
27: R15         Goodwill and Intangible Assets                      HTML     86K 
49: R16         Debt                                                HTML     53K 
79: R17         Accrued Expenses and Other Current Liabilities      HTML     26K 
35: R18         Stock-Based Compensation Plans                      HTML     56K 
26: R19         Income Taxes                                        HTML    110K 
68: R20         Commitments and Contingencies                       HTML     56K 
77: R21         Business Segments and Customer Information          HTML    132K 
48: R22         Capital Stock                                       HTML     26K 
23: R23         401(k) Plan                                         HTML     28K 
67: R24         Fair Value Measurements                             HTML     47K 
76: R25         Selected Quarterly Data (Unaudited)                 HTML    108K 
47: R26         Subsequent Events                                   HTML     27K 
22: R27         Nature of Business and Significant Accounting       HTML    140K 
                Policies (Policies)                                              
66: R28         Nature of Business and Significant Accounting       HTML     34K 
                Policies (Tables)                                                
78: R29         Acquisition (Tables)                                HTML     61K 
82: R30         Revenue Recognition (Tables)                        HTML     90K 
51: R31         Receivables and Unbilled Receivables (Tables)       HTML     32K 
24: R32         Property and Equipment (Tables)                     HTML     39K 
31: R33         Goodwill and Intangible Assets (Tables)             HTML     90K 
83: R34         Debt (Tables)                                       HTML     51K 
52: R35         Stock-Based Compensation Plans (Tables)             HTML     48K 
25: R36         Income Taxes (Tables)                               HTML    112K 
32: R37         Commitments and Contingencies (Tables)              HTML     48K 
81: R38         Business Segments and Customer Information          HTML    129K 
                (Tables)                                                         
53: R39         Fair Value Measurements (Tables)                    HTML     40K 
72: R40         Selected Quarterly Data (Unaudited) (Tables)        HTML    107K 
58: R41         Nature of Business and Significant Accounting       HTML     78K 
                Policies - Narrative (Details)                                   
19: R42         Nature of Business and Significant Accounting       HTML     35K 
                Policies - Earnings Per Share (Details)                          
42: R43         Acquisition - Narrative (Details)                   HTML     77K 
73: R44         Acquisition - Schedule of Business Acquisition      HTML     74K 
                (Details)                                                        
59: R45         Acquisition - Business Acquisition, Pro Forma       HTML     33K 
                Information (Details)                                            
21: R46         Revenue Recognition - Disaggregation of Revenue     HTML     93K 
                (Details)                                                        
44: R47         Revenue Recognition - Narrative (Details)           HTML     44K 
70: R48         Revenue Recognition - Performance Obligations       HTML     32K 
                (Details)                                                        
61: R49         Receivables and Unbilled Receivables (Details)      HTML     38K 
56: R50         Property and Equipment (Details)                    HTML     48K 
86: R51         Goodwill and Intangible Assets (Details)            HTML     82K 
37: R52         Debt (Details)                                      HTML     87K 
30: R53         Accrued Expenses and Other Current Liabilities      HTML     26K 
                (Details)                                                        
55: R54         Stock-Based Compensation Plans (Details)            HTML     77K 
85: R55         Income Taxes (Details)                              HTML    151K 
36: R56         Commitments and Contingencies - Narrative           HTML     45K 
                (Details)                                                        
29: R57         Commitments and Contingencies - Components of       HTML     32K 
                Lease Expense (Details)                                          
54: R58         Commitments and Contingencies - Maturities of       HTML     46K 
                Operating Lease Liabilities (Details)                            
87: R59         Business Segments and Customer Information -        HTML     41K 
                Narrative (Details)                                              
39: R60         Business Segments and Customer Information          HTML     74K 
                (Details)                                                        
17: R61         Business Segments and Customer Information - Major  HTML     44K 
                Customers (Details)                                              
64: R62         Business Segments and Customer Information -        HTML     35K 
                Geographic Area (Details)                                        
75: R63         Capital Stock (Details)                             HTML     28K 
38: R64         401(k) Plan (Details)                               HTML     25K 
16: R65         Fair Value Measurements - Liabilities and Assets    HTML     44K 
                Measured at Fair Value (Details)                                 
63: R66         Fair Value Measurements (Details)                   HTML     41K 
74: R67         Selected Quarterly Data (Unaudited) (Details)       HTML     62K 
40: R68         Subsequent Events (Details)                         HTML     35K 
84: R9999       Uncategorized Items - vsec-20191231.xml             HTML     29K 
41: XML         IDEA XML File -- Filing Summary                      XML    150K 
57: EXCEL       IDEA Workbook of Financial Reports                  XLSX     95K 
10: EX-101.INS  XBRL Instance -- vsec-20191231                       XML   2.51M 
12: EX-101.CAL  XBRL Calculations -- vsec-20191231_cal               XML    277K 
13: EX-101.DEF  XBRL Definitions -- vsec-20191231_def                XML    562K 
14: EX-101.LAB  XBRL Labels -- vsec-20191231_lab                     XML   1.58M 
15: EX-101.PRE  XBRL Presentations -- vsec-20191231_pre              XML    935K 
11: EX-101.SCH  XBRL Schema -- vsec-20191231                         XSD    156K 
65: ZIP         XBRL Zipped Folder -- 0000102752-20-000016-xbrl      Zip    235K

‘EX-101.LAB’   —   XBRL Labels — vsec-20191231_lab

This Exhibit is an XBRL XML File.

                                                                                                                                                                                
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<link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedPeriodEndLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedPeriodEndLabel" xlink:type="simple"/>
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<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevenueFromContractWithCustomerAbstract" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerAbstract_FDE36BF4EAA83EC9D31E42ED8A3BC407" xlink:type="locator"/>
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<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisaggregationOfRevenueTable" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_6D5FF007D72608216E4B42ED8A3BF332" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ContractWithCustomerBasisOfPricingAxis_158F0AF828EBA9F5C1C942ED8A3B37AD_terseLabel_en-US" xlink:label="lab_us-gaap_ContractWithCustomerBasisOfPricingAxis_158F0AF828EBA9F5C1C942ED8A3B37AD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Contract with Customer, Basis of Pricing [Axis] </link:label>
<link:label id="lab_us-gaap_ContractWithCustomerBasisOfPricingAxis_158F0AF828EBA9F5C1C942ED8A3B37AD_label_en-US" xlink:label="lab_us-gaap_ContractWithCustomerBasisOfPricingAxis_158F0AF828EBA9F5C1C942ED8A3B37AD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Contract with Customer, Basis of Pricing [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ContractWithCustomerBasisOfPricingAxis" xlink:label="loc_us-gaap_ContractWithCustomerBasisOfPricingAxis_158F0AF828EBA9F5C1C942ED8A3B37AD" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ContractWithCustomerBasisOfPricingAxis_158F0AF828EBA9F5C1C942ED8A3B37AD" xlink:to="lab_us-gaap_ContractWithCustomerBasisOfPricingAxis_158F0AF828EBA9F5C1C942ED8A3B37AD" xlink:type="arc"/>
<link:label id="lab_us-gaap_ContractWithCustomerBasisOfPricingDomain_E3AE95CD486648A37E6742ED8A3B6C62_terseLabel_en-US" xlink:label="lab_us-gaap_ContractWithCustomerBasisOfPricingDomain_E3AE95CD486648A37E6742ED8A3B6C62" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Contract with Customer, Basis of Pricing [Domain] </link:label>
<link:label id="lab_us-gaap_ContractWithCustomerBasisOfPricingDomain_E3AE95CD486648A37E6742ED8A3B6C62_label_en-US" xlink:label="lab_us-gaap_ContractWithCustomerBasisOfPricingDomain_E3AE95CD486648A37E6742ED8A3B6C62" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Contract with Customer, Basis of Pricing [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ContractWithCustomerBasisOfPricingDomain" xlink:label="loc_us-gaap_ContractWithCustomerBasisOfPricingDomain_E3AE95CD486648A37E6742ED8A3B6C62" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ContractWithCustomerBasisOfPricingDomain_E3AE95CD486648A37E6742ED8A3B6C62" xlink:to="lab_us-gaap_ContractWithCustomerBasisOfPricingDomain_E3AE95CD486648A37E6742ED8A3B6C62" xlink:type="arc"/>
<link:label id="lab_vsec_CostTypeContractMember_CEB373F9BDC403A87DC942ED8A3B0B5F_terseLabel_en-US" xlink:label="lab_vsec_CostTypeContractMember_CEB373F9BDC403A87DC942ED8A3B0B5F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Cost-type </link:label>
<link:label id="lab_vsec_CostTypeContractMember_CEB373F9BDC403A87DC942ED8A3B0B5F_label_en-US" xlink:label="lab_vsec_CostTypeContractMember_CEB373F9BDC403A87DC942ED8A3B0B5F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Cost-Type Contract [Member] </link:label>
<link:label id="lab_vsec_CostTypeContractMember_CEB373F9BDC403A87DC942ED8A3B0B5F_documentation_en-US" xlink:label="lab_vsec_CostTypeContractMember_CEB373F9BDC403A87DC942ED8A3B0B5F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Cost-Type Contract [Member] </link:label>
<link:loc xlink:href="vsec-20191231.xsd#vsec_CostTypeContractMember" xlink:label="loc_vsec_CostTypeContractMember_CEB373F9BDC403A87DC942ED8A3B0B5F" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_vsec_CostTypeContractMember_CEB373F9BDC403A87DC942ED8A3B0B5F" xlink:to="lab_vsec_CostTypeContractMember_CEB373F9BDC403A87DC942ED8A3B0B5F" xlink:type="arc"/>
<link:label id="lab_us-gaap_FixedPriceContractMember_EC9AB51AF4C67F9C97FE42ED8A3BB0BE_terseLabel_en-US" xlink:label="lab_us-gaap_FixedPriceContractMember_EC9AB51AF4C67F9C97FE42ED8A3BB0BE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Fixed-price </link:label>
<link:label id="lab_us-gaap_FixedPriceContractMember_EC9AB51AF4C67F9C97FE42ED8A3BB0BE_label_en-US" xlink:label="lab_us-gaap_FixedPriceContractMember_EC9AB51AF4C67F9C97FE42ED8A3BB0BE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Fixed-price Contract [Member] </link:label>
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<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FixedPriceContractMember_EC9AB51AF4C67F9C97FE42ED8A3BB0BE" xlink:to="lab_us-gaap_FixedPriceContractMember_EC9AB51AF4C67F9C97FE42ED8A3BB0BE" xlink:type="arc"/>
<link:label id="lab_us-gaap_TimeAndMaterialsContractMember_DC326268FA67999930DA42ED8A3B02B3_terseLabel_en-US" xlink:label="lab_us-gaap_TimeAndMaterialsContractMember_DC326268FA67999930DA42ED8A3B02B3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Time and materials </link:label>
<link:label id="lab_us-gaap_TimeAndMaterialsContractMember_DC326268FA67999930DA42ED8A3B02B3_label_en-US" xlink:label="lab_us-gaap_TimeAndMaterialsContractMember_DC326268FA67999930DA42ED8A3B02B3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Time-and-materials Contract [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TimeAndMaterialsContractMember" xlink:label="loc_us-gaap_TimeAndMaterialsContractMember_DC326268FA67999930DA42ED8A3B02B3" xlink:type="locator"/>
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<link:label id="lab_us-gaap_StatementBusinessSegmentsAxis_DB50399EFD3724A790A042ED8A3B259C_terseLabel_en-US" xlink:label="lab_us-gaap_StatementBusinessSegmentsAxis_DB50399EFD3724A790A042ED8A3B259C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Segments [Axis] </link:label>
<link:label id="lab_us-gaap_StatementBusinessSegmentsAxis_DB50399EFD3724A790A042ED8A3B259C_label_en-US" xlink:label="lab_us-gaap_StatementBusinessSegmentsAxis_DB50399EFD3724A790A042ED8A3B259C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Segments [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_DB50399EFD3724A790A042ED8A3B259C" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_DB50399EFD3724A790A042ED8A3B259C" xlink:to="lab_us-gaap_StatementBusinessSegmentsAxis_DB50399EFD3724A790A042ED8A3B259C" xlink:type="arc"/>
<link:label id="lab_us-gaap_SegmentDomain_32DAC7F468CB7062E1AC42ED8A3BA915_terseLabel_en-US" xlink:label="lab_us-gaap_SegmentDomain_32DAC7F468CB7062E1AC42ED8A3BA915" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Segments [Domain] </link:label>
<link:label id="lab_us-gaap_SegmentDomain_32DAC7F468CB7062E1AC42ED8A3BA915_label_en-US" xlink:label="lab_us-gaap_SegmentDomain_32DAC7F468CB7062E1AC42ED8A3BA915" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Segments [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_32DAC7F468CB7062E1AC42ED8A3BA915" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SegmentDomain_32DAC7F468CB7062E1AC42ED8A3BA915" xlink:to="lab_us-gaap_SegmentDomain_32DAC7F468CB7062E1AC42ED8A3BA915" xlink:type="arc"/>
<link:label id="lab_vsec_SupplyChainManagementGroupMember_D6A9ECEB0E8861A4A39C42ED8A3B8EAC_terseLabel_en-US" xlink:label="lab_vsec_SupplyChainManagementGroupMember_D6A9ECEB0E8861A4A39C42ED8A3B8EAC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Supply Chain Management </link:label>
<link:label id="lab_vsec_SupplyChainManagementGroupMember_D6A9ECEB0E8861A4A39C42ED8A3B8EAC_label_en-US" xlink:label="lab_vsec_SupplyChainManagementGroupMember_D6A9ECEB0E8861A4A39C42ED8A3B8EAC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Supply Chain Management Group [Member] </link:label>
<link:label id="lab_vsec_SupplyChainManagementGroupMember_D6A9ECEB0E8861A4A39C42ED8A3B8EAC_documentation_en-US" xlink:label="lab_vsec_SupplyChainManagementGroupMember_D6A9ECEB0E8861A4A39C42ED8A3B8EAC" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Our Supply Chain Management Group is a reporting segment that supplies vehicle parts. This group includes WBI, which was acquired on June 6, 2011. </link:label>
<link:loc xlink:href="vsec-20191231.xsd#vsec_SupplyChainManagementGroupMember" xlink:label="loc_vsec_SupplyChainManagementGroupMember_D6A9ECEB0E8861A4A39C42ED8A3B8EAC" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_vsec_SupplyChainManagementGroupMember_D6A9ECEB0E8861A4A39C42ED8A3B8EAC" xlink:to="lab_vsec_SupplyChainManagementGroupMember_D6A9ECEB0E8861A4A39C42ED8A3B8EAC" xlink:type="arc"/>
<link:label id="lab_vsec_AviationAcquisitionsMember_10BD3DBA3D0D015571DC42ED8A3BD70A_terseLabel_en-US" xlink:label="lab_vsec_AviationAcquisitionsMember_10BD3DBA3D0D015571DC42ED8A3BD70A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Aviation </link:label>
<link:label id="lab_vsec_AviationAcquisitionsMember_10BD3DBA3D0D015571DC42ED8A3BD70A_label_en-US" xlink:label="lab_vsec_AviationAcquisitionsMember_10BD3DBA3D0D015571DC42ED8A3BD70A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Aviation Acquisitions [Member] </link:label>
<link:label id="lab_vsec_AviationAcquisitionsMember_10BD3DBA3D0D015571DC42ED8A3BD70A_documentation_en-US" xlink:label="lab_vsec_AviationAcquisitionsMember_10BD3DBA3D0D015571DC42ED8A3BD70A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Aviation Acquisitions company research & investing information. </link:label>
<link:loc xlink:href="vsec-20191231.xsd#vsec_AviationAcquisitionsMember" xlink:label="loc_vsec_AviationAcquisitionsMember_10BD3DBA3D0D015571DC42ED8A3BD70A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_vsec_AviationAcquisitionsMember_10BD3DBA3D0D015571DC42ED8A3BD70A" xlink:to="lab_vsec_AviationAcquisitionsMember_10BD3DBA3D0D015571DC42ED8A3BD70A" xlink:type="arc"/>
<link:label id="lab_vsec_FederalGroupMember_17618BA5D9364764E5E142ED8A3BB0ED_terseLabel_en-US" xlink:label="lab_vsec_FederalGroupMember_17618BA5D9364764E5E142ED8A3BB0ED" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Federal Services Group </link:label>
<link:label id="lab_vsec_FederalGroupMember_17618BA5D9364764E5E142ED8A3BB0ED_label_en-US" xlink:label="lab_vsec_FederalGroupMember_17618BA5D9364764E5E142ED8A3BB0ED" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Federal Services Group [Member] </link:label>
<link:label id="lab_vsec_FederalGroupMember_17618BA5D9364764E5E142ED8A3BB0ED_documentation_en-US" xlink:label="lab_vsec_FederalGroupMember_17618BA5D9364764E5E142ED8A3BB0ED" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Our Federal Services Group is a reporting segment that provides legacy equipment sustainment, engineering, technical, management, integrated logistics support and information technology services to Department of Defense and other government agencies. </link:label>
<link:loc xlink:href="vsec-20191231.xsd#vsec_FederalGroupMember" xlink:label="loc_vsec_FederalGroupMember_17618BA5D9364764E5E142ED8A3BB0ED" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_vsec_FederalGroupMember_17618BA5D9364764E5E142ED8A3BB0ED" xlink:to="lab_vsec_FederalGroupMember_17618BA5D9364764E5E142ED8A3BB0ED" xlink:type="arc"/>
<link:label id="lab_srt_MajorCustomersAxis_DEBDD569DDE6980F508742ED8A4BD4C5_terseLabel_en-US" xlink:label="lab_srt_MajorCustomersAxis_DEBDD569DDE6980F508742ED8A4BD4C5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Customer [Axis] </link:label>
<link:label id="lab_srt_MajorCustomersAxis_DEBDD569DDE6980F508742ED8A4BD4C5_label_en-US" xlink:label="lab_srt_MajorCustomersAxis_DEBDD569DDE6980F508742ED8A4BD4C5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Customer [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_MajorCustomersAxis" xlink:label="loc_srt_MajorCustomersAxis_DEBDD569DDE6980F508742ED8A4BD4C5" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_MajorCustomersAxis_DEBDD569DDE6980F508742ED8A4BD4C5" xlink:to="lab_srt_MajorCustomersAxis_DEBDD569DDE6980F508742ED8A4BD4C5" xlink:type="arc"/>
<link:label id="lab_srt_NameOfMajorCustomerDomain_B8AAC28DFD76FEE1658742ED8A4B6367_terseLabel_en-US" xlink:label="lab_srt_NameOfMajorCustomerDomain_B8AAC28DFD76FEE1658742ED8A4B6367" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Customer [Domain] </link:label>
<link:label id="lab_srt_NameOfMajorCustomerDomain_B8AAC28DFD76FEE1658742ED8A4B6367_label_en-US" xlink:label="lab_srt_NameOfMajorCustomerDomain_B8AAC28DFD76FEE1658742ED8A4B6367" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Customer [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_NameOfMajorCustomerDomain" xlink:label="loc_srt_NameOfMajorCustomerDomain_B8AAC28DFD76FEE1658742ED8A4B6367" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_NameOfMajorCustomerDomain_B8AAC28DFD76FEE1658742ED8A4B6367" xlink:to="lab_srt_NameOfMajorCustomerDomain_B8AAC28DFD76FEE1658742ED8A4B6367" xlink:type="arc"/>
<link:label id="lab_vsec_DepartmentofDefenseMember_6238CE9D7899B38F78B742ED8A4BA291_terseLabel_en-US" xlink:label="lab_vsec_DepartmentofDefenseMember_6238CE9D7899B38F78B742ED8A4BA291" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> DoD </link:label>
<link:label id="lab_vsec_DepartmentofDefenseMember_6238CE9D7899B38F78B742ED8A4BA291_label_en-US" xlink:label="lab_vsec_DepartmentofDefenseMember_6238CE9D7899B38F78B742ED8A4BA291" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Department of Defense [Member] </link:label>
<link:label id="lab_vsec_DepartmentofDefenseMember_6238CE9D7899B38F78B742ED8A4BA291_documentation_en-US" xlink:label="lab_vsec_DepartmentofDefenseMember_6238CE9D7899B38F78B742ED8A4BA291" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Department of Defense [Member] </link:label>
<link:loc xlink:href="vsec-20191231.xsd#vsec_DepartmentofDefenseMember" xlink:label="loc_vsec_DepartmentofDefenseMember_6238CE9D7899B38F78B742ED8A4BA291" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_vsec_DepartmentofDefenseMember_6238CE9D7899B38F78B742ED8A4BA291" xlink:to="lab_vsec_DepartmentofDefenseMember_6238CE9D7899B38F78B742ED8A4BA291" xlink:type="arc"/>
<link:label id="lab_vsec_OtherGovernmentMember_5DE3D7F55D729923485E42ED8A4BEA06_verboseLabel_en-US" xlink:label="lab_vsec_OtherGovernmentMember_5DE3D7F55D729923485E42ED8A4BEA06" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Other Government </link:label>
<link:label id="lab_vsec_OtherGovernmentMember_5DE3D7F55D729923485E42ED8A4BEA06_label_en-US" xlink:label="lab_vsec_OtherGovernmentMember_5DE3D7F55D729923485E42ED8A4BEA06" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Government [Member] </link:label>
<link:label id="lab_vsec_OtherGovernmentMember_5DE3D7F55D729923485E42ED8A4BEA06_documentation_en-US" xlink:label="lab_vsec_OtherGovernmentMember_5DE3D7F55D729923485E42ED8A4BEA06" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Other Government [Member] </link:label>
<link:loc xlink:href="vsec-20191231.xsd#vsec_OtherGovernmentMember" xlink:label="loc_vsec_OtherGovernmentMember_5DE3D7F55D729923485E42ED8A4BEA06" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_vsec_OtherGovernmentMember_5DE3D7F55D729923485E42ED8A4BEA06" xlink:to="lab_vsec_OtherGovernmentMember_5DE3D7F55D729923485E42ED8A4BEA06" xlink:type="arc"/>
<link:label id="lab_vsec_CommercialMember_FEC96B41F92BB1E7DBE242ED8A4B0FAB_terseLabel_en-US" xlink:label="lab_vsec_CommercialMember_FEC96B41F92BB1E7DBE242ED8A4B0FAB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Commercial </link:label>
<link:label id="lab_vsec_CommercialMember_FEC96B41F92BB1E7DBE242ED8A4B0FAB_label_en-US" xlink:label="lab_vsec_CommercialMember_FEC96B41F92BB1E7DBE242ED8A4B0FAB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Commercial [Member] </link:label>
<link:label id="lab_vsec_CommercialMember_FEC96B41F92BB1E7DBE242ED8A4B0FAB_documentation_en-US" xlink:label="lab_vsec_CommercialMember_FEC96B41F92BB1E7DBE242ED8A4B0FAB" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Represents commercial customers. </link:label>
<link:loc xlink:href="vsec-20191231.xsd#vsec_CommercialMember" xlink:label="loc_vsec_CommercialMember_FEC96B41F92BB1E7DBE242ED8A4B0FAB" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_vsec_CommercialMember_FEC96B41F92BB1E7DBE242ED8A4B0FAB" xlink:to="lab_vsec_CommercialMember_FEC96B41F92BB1E7DBE242ED8A4B0FAB" xlink:type="arc"/>
<link:label id="lab_us-gaap_DisaggregationOfRevenueLineItems_703BFE536F2F98B9B8F642ED8A4B4D61_terseLabel_en-US" xlink:label="lab_us-gaap_DisaggregationOfRevenueLineItems_703BFE536F2F98B9B8F642ED8A4B4D61" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Disaggregation of Revenue [Line Items] </link:label>
<link:label id="lab_us-gaap_DisaggregationOfRevenueLineItems_703BFE536F2F98B9B8F642ED8A4B4D61_label_en-US" xlink:label="lab_us-gaap_DisaggregationOfRevenueLineItems_703BFE536F2F98B9B8F642ED8A4B4D61" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Disaggregation of Revenue [Line Items] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisaggregationOfRevenueLineItems" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_703BFE536F2F98B9B8F642ED8A4B4D61" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_703BFE536F2F98B9B8F642ED8A4B4D61" xlink:to="lab_us-gaap_DisaggregationOfRevenueLineItems_703BFE536F2F98B9B8F642ED8A4B4D61" xlink:type="arc"/>
<link:label id="lab_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_F019F6C169BD3B3C0E2842ED8A4BD6D9_terseLabel_en-US" xlink:label="lab_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_F019F6C169BD3B3C0E2842ED8A4BD6D9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Revenues </link:label>
<link:label id="lab_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_F019F6C169BD3B3C0E2842ED8A4BD6D9_label_en-US" xlink:label="lab_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_F019F6C169BD3B3C0E2842ED8A4BD6D9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Revenue from Contract with Customer, Excluding Assessed Tax </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_F019F6C169BD3B3C0E2842ED8A4BD6D9" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_F019F6C169BD3B3C0E2842ED8A4BD6D9" xlink:to="lab_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_F019F6C169BD3B3C0E2842ED8A4BD6D9" xlink:type="arc"/>
<link:label id="lab_us-gaap_AccountingPoliciesAbstract_0010531357C216D40BAEED940B7E2C2B_label_en-US" xlink:label="lab_us-gaap_AccountingPoliciesAbstract_0010531357C216D40BAEED940B7E2C2B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accounting Policies [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccountingPoliciesAbstract" xlink:label="loc_us-gaap_AccountingPoliciesAbstract_0010531357C216D40BAEED940B7E2C2B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_0010531357C216D40BAEED940B7E2C2B" xlink:to="lab_us-gaap_AccountingPoliciesAbstract_0010531357C216D40BAEED940B7E2C2B" xlink:type="arc"/>
<link:label id="lab_us-gaap_BusinessDescriptionAndAccountingPoliciesTextBlock_9310DB4E57AEDC150A23ED940B7EBFF5_verboseLabel_en-US" xlink:label="lab_us-gaap_BusinessDescriptionAndAccountingPoliciesTextBlock_9310DB4E57AEDC150A23ED940B7EBFF5" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Nature of Business and Significant Accounting Policies </link:label>
<link:label id="lab_us-gaap_BusinessDescriptionAndAccountingPoliciesTextBlock_9310DB4E57AEDC150A23ED940B7EBFF5_label_en-US" xlink:label="lab_us-gaap_BusinessDescriptionAndAccountingPoliciesTextBlock_9310DB4E57AEDC150A23ED940B7EBFF5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Business Description and Accounting Policies [Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessDescriptionAndAccountingPoliciesTextBlock" xlink:label="loc_us-gaap_BusinessDescriptionAndAccountingPoliciesTextBlock_9310DB4E57AEDC150A23ED940B7EBFF5" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessDescriptionAndAccountingPoliciesTextBlock_9310DB4E57AEDC150A23ED940B7EBFF5" xlink:to="lab_us-gaap_BusinessDescriptionAndAccountingPoliciesTextBlock_9310DB4E57AEDC150A23ED940B7EBFF5" xlink:type="arc"/>
<link:label id="lab_us-gaap_FairValueDisclosuresAbstract_36D1AF8C036A4618CBF3ED940BF91A78_label_en-US" xlink:label="lab_us-gaap_FairValueDisclosuresAbstract_36D1AF8C036A4618CBF3ED940BF91A78" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Fair Value Disclosures [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueDisclosuresAbstract" xlink:label="loc_us-gaap_FairValueDisclosuresAbstract_36D1AF8C036A4618CBF3ED940BF91A78" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueDisclosuresAbstract_36D1AF8C036A4618CBF3ED940BF91A78" xlink:to="lab_us-gaap_FairValueDisclosuresAbstract_36D1AF8C036A4618CBF3ED940BF91A78" xlink:type="arc"/>
<link:label id="lab_us-gaap_FairValueByBalanceSheetGroupingTextBlock_911ED25504C2FA01BB3EED940BF987DE_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueByBalanceSheetGroupingTextBlock_911ED25504C2FA01BB3EED940BF987DE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Fair Value of Assets and Liabilities </link:label>
<link:label id="lab_us-gaap_FairValueByBalanceSheetGroupingTextBlock_911ED25504C2FA01BB3EED940BF987DE_label_en-US" xlink:label="lab_us-gaap_FairValueByBalanceSheetGroupingTextBlock_911ED25504C2FA01BB3EED940BF987DE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Fair Value, by Balance Sheet Grouping [Table Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueByBalanceSheetGroupingTextBlock" xlink:label="loc_us-gaap_FairValueByBalanceSheetGroupingTextBlock_911ED25504C2FA01BB3EED940BF987DE" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTextBlock_911ED25504C2FA01BB3EED940BF987DE" xlink:to="lab_us-gaap_FairValueByBalanceSheetGroupingTextBlock_911ED25504C2FA01BB3EED940BF987DE" xlink:type="arc"/>
<link:label id="lab_us-gaap_BusinessCombinationsAbstract_1C9111E0D2AAFF249F819AF8D1186358_label_en-US" xlink:label="lab_us-gaap_BusinessCombinationsAbstract_1C9111E0D2AAFF249F819AF8D1186358" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Business Combinations [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessCombinationsAbstract" xlink:label="loc_us-gaap_BusinessCombinationsAbstract_1C9111E0D2AAFF249F819AF8D1186358" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessCombinationsAbstract_1C9111E0D2AAFF249F819AF8D1186358" xlink:to="lab_us-gaap_BusinessCombinationsAbstract_1C9111E0D2AAFF249F819AF8D1186358" xlink:type="arc"/>
<link:label id="lab_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_F4CF3FF9F796F158D7F09AF8D118003E_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_F4CF3FF9F796F158D7F09AF8D118003E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Schedule of Business Acquisitions, by Acquisition [Table] </link:label>
<link:label id="lab_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_F4CF3FF9F796F158D7F09AF8D118003E_label_en-US" xlink:label="lab_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_F4CF3FF9F796F158D7F09AF8D118003E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Schedule of Business Acquisitions, by Acquisition [Table] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_F4CF3FF9F796F158D7F09AF8D118003E" xlink:type="locator"/>
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<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_DBE8A1F23B932DB843169AF8D118BEF8_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_DBE8A1F23B932DB843169AF8D118BEF8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Finite-Lived Intangible Assets by Major Class [Axis] </link:label>
<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_DBE8A1F23B932DB843169AF8D118BEF8_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_DBE8A1F23B932DB843169AF8D118BEF8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Finite-Lived Intangible Assets by Major Class [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_DBE8A1F23B932DB843169AF8D118BEF8" xlink:type="locator"/>
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<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_CE7A9BD97E3847D0E5C19AF8D1185F20_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_CE7A9BD97E3847D0E5C19AF8D1185F20" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Finite-Lived Intangible Assets, Major Class Name [Domain] </link:label>
<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_CE7A9BD97E3847D0E5C19AF8D1185F20_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_CE7A9BD97E3847D0E5C19AF8D1185F20" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Finite-Lived Intangible Assets, Major Class Name [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_CE7A9BD97E3847D0E5C19AF8D1185F20" xlink:type="locator"/>
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<link:label id="lab_us-gaap_EmploymentContractsMember_192039878EE49CD8EEFE9AF8D118F2BB_terseLabel_en-US" xlink:label="lab_us-gaap_EmploymentContractsMember_192039878EE49CD8EEFE9AF8D118F2BB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Employment Contracts </link:label>
<link:label id="lab_us-gaap_EmploymentContractsMember_192039878EE49CD8EEFE9AF8D118F2BB_label_en-US" xlink:label="lab_us-gaap_EmploymentContractsMember_192039878EE49CD8EEFE9AF8D118F2BB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Employment Contracts [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EmploymentContractsMember" xlink:label="loc_us-gaap_EmploymentContractsMember_192039878EE49CD8EEFE9AF8D118F2BB" xlink:type="locator"/>
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<link:label id="lab_us-gaap_NoncompeteAgreementsMember_54FD734A0DD398916AB39AF8D1184AA7_terseLabel_en-US" xlink:label="lab_us-gaap_NoncompeteAgreementsMember_54FD734A0DD398916AB39AF8D1184AA7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Noncompete Agreements </link:label>
<link:label id="lab_us-gaap_NoncompeteAgreementsMember_54FD734A0DD398916AB39AF8D1184AA7_label_en-US" xlink:label="lab_us-gaap_NoncompeteAgreementsMember_54FD734A0DD398916AB39AF8D1184AA7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Noncompete Agreements [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NoncompeteAgreementsMember" xlink:label="loc_us-gaap_NoncompeteAgreementsMember_54FD734A0DD398916AB39AF8D1184AA7" xlink:type="locator"/>
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<link:label id="lab_us-gaap_CustomerRelationshipsMember_D3360EEB0A6954B188949AF8D1189A9E_terseLabel_en-US" xlink:label="lab_us-gaap_CustomerRelationshipsMember_D3360EEB0A6954B188949AF8D1189A9E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Customer Relationships </link:label>
<link:label id="lab_us-gaap_CustomerRelationshipsMember_D3360EEB0A6954B188949AF8D1189A9E_label_en-US" xlink:label="lab_us-gaap_CustomerRelationshipsMember_D3360EEB0A6954B188949AF8D1189A9E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Customer Relationships [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CustomerRelationshipsMember" xlink:label="loc_us-gaap_CustomerRelationshipsMember_D3360EEB0A6954B188949AF8D1189A9E" xlink:type="locator"/>
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<link:label id="lab_us-gaap_TradeNamesMember_9C9DD45A7C1FF1B389C19AF8D118559B_terseLabel_en-US" xlink:label="lab_us-gaap_TradeNamesMember_9C9DD45A7C1FF1B389C19AF8D118559B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Trade Names </link:label>
<link:label id="lab_us-gaap_TradeNamesMember_9C9DD45A7C1FF1B389C19AF8D118559B_label_en-US" xlink:label="lab_us-gaap_TradeNamesMember_9C9DD45A7C1FF1B389C19AF8D118559B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Trade Names [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TradeNamesMember" xlink:label="loc_us-gaap_TradeNamesMember_9C9DD45A7C1FF1B389C19AF8D118559B" xlink:type="locator"/>
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<link:label id="lab_us-gaap_BusinessAcquisitionAxis_80F9841F608B020436939AF8D1188694_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionAxis_80F9841F608B020436939AF8D1188694" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Business Acquisition [Axis] </link:label>
<link:label id="lab_us-gaap_BusinessAcquisitionAxis_80F9841F608B020436939AF8D1188694_label_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionAxis_80F9841F608B020436939AF8D1188694" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Business Acquisition [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_80F9841F608B020436939AF8D1188694" xlink:type="locator"/>
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<link:label id="lab_us-gaap_BusinessAcquisitionAcquireeDomain_62A5AD19F37EC6F678E79AF8D1181ECC_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionAcquireeDomain_62A5AD19F37EC6F678E79AF8D1181ECC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Business Acquisition, Acquiree [Domain] </link:label>
<link:label id="lab_us-gaap_BusinessAcquisitionAcquireeDomain_62A5AD19F37EC6F678E79AF8D1181ECC_label_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionAcquireeDomain_62A5AD19F37EC6F678E79AF8D1181ECC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Business Acquisition, Acquiree [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_62A5AD19F37EC6F678E79AF8D1181ECC" xlink:type="locator"/>
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<link:label id="lab_vsec_FirstChoiceAerospaceMember_52F64D79A5E4F5DC00E69AF8D11897BC_terseLabel_en-US" xlink:label="lab_vsec_FirstChoiceAerospaceMember_52F64D79A5E4F5DC00E69AF8D11897BC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> First Choice Aerospace </link:label>
<link:label id="lab_vsec_FirstChoiceAerospaceMember_52F64D79A5E4F5DC00E69AF8D11897BC_label_en-US" xlink:label="lab_vsec_FirstChoiceAerospaceMember_52F64D79A5E4F5DC00E69AF8D11897BC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> First Choice Aerospace [Member] </link:label>
<link:label id="lab_vsec_FirstChoiceAerospaceMember_52F64D79A5E4F5DC00E69AF8D11897BC_documentation_en-US" xlink:label="lab_vsec_FirstChoiceAerospaceMember_52F64D79A5E4F5DC00E69AF8D11897BC" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> First Choice Aerospace [Member] </link:label>
<link:loc xlink:href="vsec-20191231.xsd#vsec_FirstChoiceAerospaceMember" xlink:label="loc_vsec_FirstChoiceAerospaceMember_52F64D79A5E4F5DC00E69AF8D11897BC" xlink:type="locator"/>
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<link:label id="lab_us-gaap_BusinessAcquisitionLineItems_96AE8F6FDF9F7ECBB6389AF8D1182B56_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionLineItems_96AE8F6FDF9F7ECBB6389AF8D1182B56" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Business Acquisition [Line Items] </link:label>
<link:label id="lab_us-gaap_BusinessAcquisitionLineItems_96AE8F6FDF9F7ECBB6389AF8D1182B56_label_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionLineItems_96AE8F6FDF9F7ECBB6389AF8D1182B56" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Business Acquisition [Line Items] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessAcquisitionLineItems" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_96AE8F6FDF9F7ECBB6389AF8D1182B56" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_96AE8F6FDF9F7ECBB6389AF8D1182B56" xlink:to="lab_us-gaap_BusinessAcquisitionLineItems_96AE8F6FDF9F7ECBB6389AF8D1182B56" xlink:type="arc"/>
<link:label id="lab_us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired_82F4CEDEB8394FD955219AF8D118F28E_verboseLabel_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired_82F4CEDEB8394FD955219AF8D118F28E" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Business acquisition, percentage acquired </link:label>
<link:label id="lab_us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired_82F4CEDEB8394FD955219AF8D118F28E_label_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired_82F4CEDEB8394FD955219AF8D118F28E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Business Acquisition, Percentage of Voting Interests Acquired </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired" xlink:label="loc_us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired_82F4CEDEB8394FD955219AF8D118F28E" xlink:type="locator"/>
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<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetUsefulLife_536B4B85C5396ED137909AF8D118E8B5_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetUsefulLife_536B4B85C5396ED137909AF8D118E8B5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Term of contract </link:label>
<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetUsefulLife_536B4B85C5396ED137909AF8D118E8B5_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetUsefulLife_536B4B85C5396ED137909AF8D118E8B5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Finite-Lived Intangible Asset, Useful Life </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetUsefulLife" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetUsefulLife_536B4B85C5396ED137909AF8D118E8B5" xlink:type="locator"/>
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<link:label id="lab_us-gaap_PaymentsToAcquireBusinessesGross_D86995024B9749796E869AF8D11808F6_verboseLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireBusinessesGross_D86995024B9749796E869AF8D11808F6" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Cash consideration </link:label>
<link:label id="lab_us-gaap_PaymentsToAcquireBusinessesGross_D86995024B9749796E869AF8D11808F6_label_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireBusinessesGross_D86995024B9749796E869AF8D11808F6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Payments to Acquire Businesses, Gross </link:label>
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<link:label id="lab_vsec_PaymentstoAcquireBusinessesWorkingCapitalAdjustment_8D51406589C3FA25943F9AF8D11860CF_terseLabel_en-US" xlink:label="lab_vsec_PaymentstoAcquireBusinessesWorkingCapitalAdjustment_8D51406589C3FA25943F9AF8D11860CF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Working capital adjustment </link:label>
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<link:label id="lab_us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh_B31263834B5C03F17D399AF8D1189E35_verboseLabel_en-US" xlink:label="lab_us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh_B31263834B5C03F17D399AF8D1189E35" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Earn-out payments </link:label>
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<link:label id="lab_vsec_BusinessCombinationConsiderationTransferredEscrow_D5E09FE213BCC820922B9AF8D118AA8D_terseLabel_en-US" xlink:label="lab_vsec_BusinessCombinationConsiderationTransferredEscrow_D5E09FE213BCC820922B9AF8D118AA8D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Escrow </link:label>
<link:label id="lab_vsec_BusinessCombinationConsiderationTransferredEscrow_D5E09FE213BCC820922B9AF8D118AA8D_label_en-US" xlink:label="lab_vsec_BusinessCombinationConsiderationTransferredEscrow_D5E09FE213BCC820922B9AF8D118AA8D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Business Combination, Consideration Transferred, Escrow </link:label>
<link:label id="lab_vsec_BusinessCombinationConsiderationTransferredEscrow_D5E09FE213BCC820922B9AF8D118AA8D_documentation_en-US" xlink:label="lab_vsec_BusinessCombinationConsiderationTransferredEscrow_D5E09FE213BCC820922B9AF8D118AA8D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Business Combination, Consideration Transferred, Escrow </link:label>
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<link:label id="lab_us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual_FF578AEDA97465C52A609AF8D118197C_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual_FF578AEDA97465C52A609AF8D118197C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Revenue </link:label>
<link:label id="lab_us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual_FF578AEDA97465C52A609AF8D118197C_label_en-US" xlink:label="lab_us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual_FF578AEDA97465C52A609AF8D118197C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual" xlink:label="loc_us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual_FF578AEDA97465C52A609AF8D118197C" xlink:type="locator"/>
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<link:label id="lab_us-gaap_BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual_CB426C55B68D8AA69BB19AF8D118C089_label_en-US" xlink:label="lab_us-gaap_BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual_CB426C55B68D8AA69BB19AF8D118C089" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual" xlink:label="loc_us-gaap_BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual_CB426C55B68D8AA69BB19AF8D118C089" xlink:type="locator"/>
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<link:label id="lab_vsec_BusinessCombinationProFormaInformationAmortizationOfIntangibleAssetsSinceAcquisitionDateActual_F11FB5FBC2CDB3CB9BC29AF8D1186CFD_terseLabel_en-US" xlink:label="lab_vsec_BusinessCombinationProFormaInformationAmortizationOfIntangibleAssetsSinceAcquisitionDateActual_F11FB5FBC2CDB3CB9BC29AF8D1186CFD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Amortization of intangible assets </link:label>
<link:label id="lab_vsec_BusinessCombinationProFormaInformationAmortizationOfIntangibleAssetsSinceAcquisitionDateActual_F11FB5FBC2CDB3CB9BC29AF8D1186CFD_label_en-US" xlink:label="lab_vsec_BusinessCombinationProFormaInformationAmortizationOfIntangibleAssetsSinceAcquisitionDateActual_F11FB5FBC2CDB3CB9BC29AF8D1186CFD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Business Combination, Pro Forma Information, Amortization Of Intangible Assets Since Acquisition Date, Actual </link:label>
<link:label id="lab_vsec_BusinessCombinationProFormaInformationAmortizationOfIntangibleAssetsSinceAcquisitionDateActual_F11FB5FBC2CDB3CB9BC29AF8D1186CFD_documentation_en-US" xlink:label="lab_vsec_BusinessCombinationProFormaInformationAmortizationOfIntangibleAssetsSinceAcquisitionDateActual_F11FB5FBC2CDB3CB9BC29AF8D1186CFD" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Business Combination, Pro Forma Information, Amortization Of Intangible Assets Since Acquisition Date, Actual </link:label>
<link:loc xlink:href="vsec-20191231.xsd#vsec_BusinessCombinationProFormaInformationAmortizationOfIntangibleAssetsSinceAcquisitionDateActual" xlink:label="loc_vsec_BusinessCombinationProFormaInformationAmortizationOfIntangibleAssetsSinceAcquisitionDateActual_F11FB5FBC2CDB3CB9BC29AF8D1186CFD" xlink:type="locator"/>
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<link:label id="lab_vsec_BusinessCombinationProFormaInformationCorporateCostsSinceAcquisitionDateActual_E6C02D19190BD19E64CB9AF8D118D292_terseLabel_en-US" xlink:label="lab_vsec_BusinessCombinationProFormaInformationCorporateCostsSinceAcquisitionDateActual_E6C02D19190BD19E64CB9AF8D118D292" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Corporate costs </link:label>
<link:label id="lab_vsec_BusinessCombinationProFormaInformationCorporateCostsSinceAcquisitionDateActual_E6C02D19190BD19E64CB9AF8D118D292_label_en-US" xlink:label="lab_vsec_BusinessCombinationProFormaInformationCorporateCostsSinceAcquisitionDateActual_E6C02D19190BD19E64CB9AF8D118D292" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Business Combination, Pro Forma Information, Corporate Costs Since Acquisition Date, Actual </link:label>
<link:label id="lab_vsec_BusinessCombinationProFormaInformationCorporateCostsSinceAcquisitionDateActual_E6C02D19190BD19E64CB9AF8D118D292_documentation_en-US" xlink:label="lab_vsec_BusinessCombinationProFormaInformationCorporateCostsSinceAcquisitionDateActual_E6C02D19190BD19E64CB9AF8D118D292" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Business Combination, Pro Forma Information, Corporate Costs Since Acquisition Date, Actual </link:label>
<link:loc xlink:href="vsec-20191231.xsd#vsec_BusinessCombinationProFormaInformationCorporateCostsSinceAcquisitionDateActual" xlink:label="loc_vsec_BusinessCombinationProFormaInformationCorporateCostsSinceAcquisitionDateActual_E6C02D19190BD19E64CB9AF8D118D292" xlink:type="locator"/>
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<link:label id="lab_vsec_BusinessCombinationImpactofSection338h10ElectionPurchasePrice_5463203C4B44C323AF339B3314497BAB_terseLabel_en-US" xlink:label="lab_vsec_BusinessCombinationImpactofSection338h10ElectionPurchasePrice_5463203C4B44C323AF339B3314497BAB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Purchase price </link:label>
<link:label id="lab_vsec_BusinessCombinationImpactofSection338h10ElectionPurchasePrice_5463203C4B44C323AF339B3314497BAB_label_en-US" xlink:label="lab_vsec_BusinessCombinationImpactofSection338h10ElectionPurchasePrice_5463203C4B44C323AF339B3314497BAB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Business Combination, Impact of Section 338(h)(10) Election, Purchase Price </link:label>
<link:label id="lab_vsec_BusinessCombinationImpactofSection338h10ElectionPurchasePrice_5463203C4B44C323AF339B3314497BAB_documentation_en-US" xlink:label="lab_vsec_BusinessCombinationImpactofSection338h10ElectionPurchasePrice_5463203C4B44C323AF339B3314497BAB" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Business Combination, Impact of Section 338(h)(10) Election, Purchase Price </link:label>
<link:loc xlink:href="vsec-20191231.xsd#vsec_BusinessCombinationImpactofSection338h10ElectionPurchasePrice" xlink:label="loc_vsec_BusinessCombinationImpactofSection338h10ElectionPurchasePrice_5463203C4B44C323AF339B3314497BAB" xlink:type="locator"/>
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<link:label id="lab_vsec_BusinessCombinationImpactofSection338h10ElectionIncreaseDecreaseinGoodwill_6109619DEE1FEBCA3AA19B35A811BDD5_terseLabel_en-US" xlink:label="lab_vsec_BusinessCombinationImpactofSection338h10ElectionIncreaseDecreaseinGoodwill_6109619DEE1FEBCA3AA19B35A811BDD5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Increase (decrease) in goodwill </link:label>
<link:label id="lab_vsec_BusinessCombinationImpactofSection338h10ElectionIncreaseDecreaseinGoodwill_6109619DEE1FEBCA3AA19B35A811BDD5_label_en-US" xlink:label="lab_vsec_BusinessCombinationImpactofSection338h10ElectionIncreaseDecreaseinGoodwill_6109619DEE1FEBCA3AA19B35A811BDD5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Business Combination, Impact of Section 338(h)(10) Election, Increase (Decrease) in Goodwill </link:label>
<link:label id="lab_vsec_BusinessCombinationImpactofSection338h10ElectionIncreaseDecreaseinGoodwill_6109619DEE1FEBCA3AA19B35A811BDD5_documentation_en-US" xlink:label="lab_vsec_BusinessCombinationImpactofSection338h10ElectionIncreaseDecreaseinGoodwill_6109619DEE1FEBCA3AA19B35A811BDD5" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Business Combination, Impact of Section 338(h)(10) Election, Increase (Decrease) in Goodwill </link:label>
<link:loc xlink:href="vsec-20191231.xsd#vsec_BusinessCombinationImpactofSection338h10ElectionIncreaseDecreaseinGoodwill" xlink:label="loc_vsec_BusinessCombinationImpactofSection338h10ElectionIncreaseDecreaseinGoodwill_6109619DEE1FEBCA3AA19B35A811BDD5" xlink:type="locator"/>
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<link:label id="lab_vsec_BusinessCombinationImpactofSection338h10ElectionIncreaseDecreaseRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedIntangibleAssetsOtherthanGoodwill_F6C1716B2B25F35A1D199B379482D9B1_negatedTerseLabel_en-US" xlink:label="lab_vsec_BusinessCombinationImpactofSection338h10ElectionIncreaseDecreaseRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedIntangibleAssetsOtherthanGoodwill_F6C1716B2B25F35A1D199B379482D9B1" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Increase (decrease) in other intangible assets </link:label>
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<link:label id="lab_vsec_BusinessCombinationImpactofSection338h10ElectionIncreaseDecreaseRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedIntangibleAssetsOtherthanGoodwill_F6C1716B2B25F35A1D199B379482D9B1_documentation_en-US" xlink:label="lab_vsec_BusinessCombinationImpactofSection338h10ElectionIncreaseDecreaseRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedIntangibleAssetsOtherthanGoodwill_F6C1716B2B25F35A1D199B379482D9B1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Business Combination, Impact of Section 338(h)(10) Election, Increase (Decrease) Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill </link:label>
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<link:label id="lab_vsec_BusinessCombinationImpactofSection338h10ElectionIncreaseDecreaseinFairValue_06E6B20360D85B05E8539B3B2AE9BA88_negatedTerseLabel_en-US" xlink:label="lab_vsec_BusinessCombinationImpactofSection338h10ElectionIncreaseDecreaseinFairValue_06E6B20360D85B05E8539B3B2AE9BA88" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Increase (decrease) in fair value </link:label>
<link:label id="lab_vsec_BusinessCombinationImpactofSection338h10ElectionIncreaseDecreaseinFairValue_06E6B20360D85B05E8539B3B2AE9BA88_label_en-US" xlink:label="lab_vsec_BusinessCombinationImpactofSection338h10ElectionIncreaseDecreaseinFairValue_06E6B20360D85B05E8539B3B2AE9BA88" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Business Combination, Impact of Section 338(h)(10) Election, Increase (Decrease) in Fair Value </link:label>
<link:label id="lab_vsec_BusinessCombinationImpactofSection338h10ElectionIncreaseDecreaseinFairValue_06E6B20360D85B05E8539B3B2AE9BA88_documentation_en-US" xlink:label="lab_vsec_BusinessCombinationImpactofSection338h10ElectionIncreaseDecreaseinFairValue_06E6B20360D85B05E8539B3B2AE9BA88" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Business Combination, Impact of Section 338(h)(10) Election, Increase (Decrease) in Fair Value </link:label>
<link:loc xlink:href="vsec-20191231.xsd#vsec_BusinessCombinationImpactofSection338h10ElectionIncreaseDecreaseinFairValue" xlink:label="loc_vsec_BusinessCombinationImpactofSection338h10ElectionIncreaseDecreaseinFairValue_06E6B20360D85B05E8539B3B2AE9BA88" xlink:type="locator"/>
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<link:label id="lab_vsec_BusinessCombinationImpactofSection338h10ElectionIncreaseDecreaseinEarnOutObligation_71EF6FA267FE2B216CAF9B3BDFA8CE21_negatedTerseLabel_en-US" xlink:label="lab_vsec_BusinessCombinationImpactofSection338h10ElectionIncreaseDecreaseinEarnOutObligation_71EF6FA267FE2B216CAF9B3BDFA8CE21" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Increase (decrease) in earn-out obligation </link:label>
<link:label id="lab_vsec_BusinessCombinationImpactofSection338h10ElectionIncreaseDecreaseinEarnOutObligation_71EF6FA267FE2B216CAF9B3BDFA8CE21_label_en-US" xlink:label="lab_vsec_BusinessCombinationImpactofSection338h10ElectionIncreaseDecreaseinEarnOutObligation_71EF6FA267FE2B216CAF9B3BDFA8CE21" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Business Combination, Impact of Section 338(h)(10) Election, Increase (Decrease) in Earn-Out Obligation </link:label>
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<link:loc xlink:href="vsec-20191231.xsd#vsec_BusinessCombinationImpactofSection338h10ElectionIncreaseDecreaseinEarnOutObligation" xlink:label="loc_vsec_BusinessCombinationImpactofSection338h10ElectionIncreaseDecreaseinEarnOutObligation_71EF6FA267FE2B216CAF9B3BDFA8CE21" xlink:type="locator"/>
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<link:label id="lab_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_F717F667A94C4DA9E7459AF8D118781A_verboseLabel_en-US" xlink:label="lab_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_F717F667A94C4DA9E7459AF8D118781A" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Weighted average useful life </link:label>
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<link:label id="lab_us-gaap_Goodwill_77768BC41C498E86677C9AF8D1182C8B_terseLabel_en-US" xlink:label="lab_us-gaap_Goodwill_77768BC41C498E86677C9AF8D1182C8B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Goodwill </link:label>
<link:label id="lab_us-gaap_Goodwill_77768BC41C498E86677C9AF8D1182C8B_label_en-US" xlink:label="lab_us-gaap_Goodwill_77768BC41C498E86677C9AF8D1182C8B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Goodwill </link:label>
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<link:label id="lab_us-gaap_BusinessCombinationAcquisitionRelatedCosts_98BCA2DD6503489F47B69AF8D1183FD4_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessCombinationAcquisitionRelatedCosts_98BCA2DD6503489F47B69AF8D1183FD4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Acquisition-related expenses </link:label>
<link:label id="lab_us-gaap_BusinessCombinationAcquisitionRelatedCosts_98BCA2DD6503489F47B69AF8D1183FD4_label_en-US" xlink:label="lab_us-gaap_BusinessCombinationAcquisitionRelatedCosts_98BCA2DD6503489F47B69AF8D1183FD4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Business Combination, Acquisition Related Costs </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessCombinationAcquisitionRelatedCosts" xlink:label="loc_us-gaap_BusinessCombinationAcquisitionRelatedCosts_98BCA2DD6503489F47B69AF8D1183FD4" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ConsolidationPolicyTextBlock_F8D960F250D7AE55C984B10346A233F0_terseLabel_en-US" xlink:label="lab_us-gaap_ConsolidationPolicyTextBlock_F8D960F250D7AE55C984B10346A233F0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Principles of Consolidation </link:label>
<link:label id="lab_us-gaap_ConsolidationPolicyTextBlock_F8D960F250D7AE55C984B10346A233F0_label_en-US" xlink:label="lab_us-gaap_ConsolidationPolicyTextBlock_F8D960F250D7AE55C984B10346A233F0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Consolidation, Policy [Policy Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ConsolidationPolicyTextBlock" xlink:label="loc_us-gaap_ConsolidationPolicyTextBlock_F8D960F250D7AE55C984B10346A233F0" xlink:type="locator"/>
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<link:label id="lab_us-gaap_UseOfEstimates_E4EE059697ED578E618BB10346A29777_terseLabel_en-US" xlink:label="lab_us-gaap_UseOfEstimates_E4EE059697ED578E618BB10346A29777" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Use of Estimates in the Preparation of Financial Statements </link:label>
<link:label id="lab_us-gaap_UseOfEstimates_E4EE059697ED578E618BB10346A29777_label_en-US" xlink:label="lab_us-gaap_UseOfEstimates_E4EE059697ED578E618BB10346A29777" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Use of Estimates, Policy [Policy Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UseOfEstimates" xlink:label="loc_us-gaap_UseOfEstimates_E4EE059697ED578E618BB10346A29777" xlink:type="locator"/>
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<link:label id="lab_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_785284AA54D9A1A79CB0B10346A23EDF_terseLabel_en-US" xlink:label="lab_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_785284AA54D9A1A79CB0B10346A23EDF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Recently Adopted Accounting Pronouncements Not Yet Adopted </link:label>
<link:label id="lab_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_785284AA54D9A1A79CB0B10346A23EDF_label_en-US" xlink:label="lab_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_785284AA54D9A1A79CB0B10346A23EDF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> New Accounting Pronouncements, Policy [Policy Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock" xlink:label="loc_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_785284AA54D9A1A79CB0B10346A23EDF" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy_E693221E584B5203B43BB10346A2B15F_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy_E693221E584B5203B43BB10346A2B15F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Stock-Based Compensation </link:label>
<link:label id="lab_us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy_E693221E584B5203B43BB10346A2B15F_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy_E693221E584B5203B43BB10346A2B15F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Payment Arrangement [Policy Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy" xlink:label="loc_us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy_E693221E584B5203B43BB10346A2B15F" xlink:type="locator"/>
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<link:label id="lab_us-gaap_EarningsPerSharePolicyTextBlock_8A1ACCDD856C774D66C6B10346A39AC6_terseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerSharePolicyTextBlock_8A1ACCDD856C774D66C6B10346A39AC6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Earnings Per Share </link:label>
<link:label id="lab_us-gaap_EarningsPerSharePolicyTextBlock_8A1ACCDD856C774D66C6B10346A39AC6_label_en-US" xlink:label="lab_us-gaap_EarningsPerSharePolicyTextBlock_8A1ACCDD856C774D66C6B10346A39AC6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Earnings Per Share, Policy [Policy Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EarningsPerSharePolicyTextBlock" xlink:label="loc_us-gaap_EarningsPerSharePolicyTextBlock_8A1ACCDD856C774D66C6B10346A39AC6" xlink:type="locator"/>
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<link:label id="lab_us-gaap_CashAndCashEquivalentsPolicyTextBlock_36491E5DAE4ABE056069B10346A33A56_terseLabel_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsPolicyTextBlock_36491E5DAE4ABE056069B10346A33A56" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Cash and Cash Equivalents </link:label>
<link:label id="lab_us-gaap_CashAndCashEquivalentsPolicyTextBlock_36491E5DAE4ABE056069B10346A33A56_label_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsPolicyTextBlock_36491E5DAE4ABE056069B10346A33A56" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Cash and Cash Equivalents, Policy [Policy Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashAndCashEquivalentsPolicyTextBlock" xlink:label="loc_us-gaap_CashAndCashEquivalentsPolicyTextBlock_36491E5DAE4ABE056069B10346A33A56" xlink:type="locator"/>
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<link:label id="lab_us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_E7B9A5ED3CA6D29A9FB5B10346A3374A_terseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_E7B9A5ED3CA6D29A9FB5B10346A3374A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Property and Equipment </link:label>
<link:label id="lab_us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_E7B9A5ED3CA6D29A9FB5B10346A3374A_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_E7B9A5ED3CA6D29A9FB5B10346A3374A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Property, Plant and Equipment, Policy [Policy Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentPolicyTextBlock" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_E7B9A5ED3CA6D29A9FB5B10346A3374A" xlink:type="locator"/>
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<link:label id="lab_vsec_ConcentrationOfCreditRiskFairValueOfFinancialInstrumentsPolicyTextBlock_40E633EA10D58FCB7CBDB10346A32958_terseLabel_en-US" xlink:label="lab_vsec_ConcentrationOfCreditRiskFairValueOfFinancialInstrumentsPolicyTextBlock_40E633EA10D58FCB7CBDB10346A32958" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Concentration of Credit Risk, Fair Value of Financial Instruments </link:label>
<link:label id="lab_vsec_ConcentrationOfCreditRiskFairValueOfFinancialInstrumentsPolicyTextBlock_40E633EA10D58FCB7CBDB10346A32958_label_en-US" xlink:label="lab_vsec_ConcentrationOfCreditRiskFairValueOfFinancialInstrumentsPolicyTextBlock_40E633EA10D58FCB7CBDB10346A32958" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Concentration of Credit Risk, Fair Value of Financial Instruments [Policy Text Block] </link:label>
<link:label id="lab_vsec_ConcentrationOfCreditRiskFairValueOfFinancialInstrumentsPolicyTextBlock_40E633EA10D58FCB7CBDB10346A32958_documentation_en-US" xlink:label="lab_vsec_ConcentrationOfCreditRiskFairValueOfFinancialInstrumentsPolicyTextBlock_40E633EA10D58FCB7CBDB10346A32958" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Disclosure of accounting policy for credit risk and determining the fair value of financial instruments. </link:label>
<link:loc xlink:href="vsec-20191231.xsd#vsec_ConcentrationOfCreditRiskFairValueOfFinancialInstrumentsPolicyTextBlock" xlink:label="loc_vsec_ConcentrationOfCreditRiskFairValueOfFinancialInstrumentsPolicyTextBlock_40E633EA10D58FCB7CBDB10346A32958" xlink:type="locator"/>
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<link:label id="lab_us-gaap_RevenueFromContractWithCustomerPolicyTextBlock_D2C0B6A8E1D3C969C23BB10346A3181B_terseLabel_en-US" xlink:label="lab_us-gaap_RevenueFromContractWithCustomerPolicyTextBlock_D2C0B6A8E1D3C969C23BB10346A3181B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Revenues </link:label>
<link:label id="lab_us-gaap_RevenueFromContractWithCustomerPolicyTextBlock_D2C0B6A8E1D3C969C23BB10346A3181B_label_en-US" xlink:label="lab_us-gaap_RevenueFromContractWithCustomerPolicyTextBlock_D2C0B6A8E1D3C969C23BB10346A3181B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Revenue from Contract with Customer [Policy Text Block] </link:label>
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<link:label id="lab_us-gaap_ReceivablesPolicyTextBlock_3CA62604821C2A6D89D7B10346A357DD_terseLabel_en-US" xlink:label="lab_us-gaap_ReceivablesPolicyTextBlock_3CA62604821C2A6D89D7B10346A357DD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Receivables and Allowance for Doubtful Accounts </link:label>
<link:label id="lab_us-gaap_ReceivablesPolicyTextBlock_3CA62604821C2A6D89D7B10346A357DD_label_en-US" xlink:label="lab_us-gaap_ReceivablesPolicyTextBlock_3CA62604821C2A6D89D7B10346A357DD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Receivable [Policy Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ReceivablesPolicyTextBlock" xlink:label="loc_us-gaap_ReceivablesPolicyTextBlock_3CA62604821C2A6D89D7B10346A357DD" xlink:type="locator"/>
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<link:label id="lab_us-gaap_InventoryPolicyTextBlock_D3684CD10090542F0D8EB10346A4C5C7_terseLabel_en-US" xlink:label="lab_us-gaap_InventoryPolicyTextBlock_D3684CD10090542F0D8EB10346A4C5C7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Inventories </link:label>
<link:label id="lab_us-gaap_InventoryPolicyTextBlock_D3684CD10090542F0D8EB10346A4C5C7_label_en-US" xlink:label="lab_us-gaap_InventoryPolicyTextBlock_D3684CD10090542F0D8EB10346A4C5C7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Inventory, Policy [Policy Text Block] </link:label>
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<link:label id="lab_us-gaap_PostemploymentBenefitPlansPolicy_B4E277C1E704CC8356D8B10346A47900_terseLabel_en-US" xlink:label="lab_us-gaap_PostemploymentBenefitPlansPolicy_B4E277C1E704CC8356D8B10346A47900" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Deferred Compensation Plans </link:label>
<link:label id="lab_us-gaap_PostemploymentBenefitPlansPolicy_B4E277C1E704CC8356D8B10346A47900_label_en-US" xlink:label="lab_us-gaap_PostemploymentBenefitPlansPolicy_B4E277C1E704CC8356D8B10346A47900" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Postemployment Benefit Plans, Policy [Policy Text Block] </link:label>
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<link:label id="lab_us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock_3255FA2F1BFBCC4C198BB10346A45EA5_terseLabel_en-US" xlink:label="lab_us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock_3255FA2F1BFBCC4C198BB10346A45EA5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Impairment of Long-Lived Assets </link:label>
<link:label id="lab_us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock_3255FA2F1BFBCC4C198BB10346A45EA5_label_en-US" xlink:label="lab_us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock_3255FA2F1BFBCC4C198BB10346A45EA5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock" xlink:label="loc_us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock_3255FA2F1BFBCC4C198BB10346A45EA5" xlink:type="locator"/>
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<link:label id="lab_us-gaap_IncomeTaxPolicyTextBlock_3BC9F403215D77AFAE32B10346A4C5CB_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxPolicyTextBlock_3BC9F403215D77AFAE32B10346A4C5CB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Income Taxes </link:label>
<link:label id="lab_us-gaap_IncomeTaxPolicyTextBlock_3BC9F403215D77AFAE32B10346A4C5CB_label_en-US" xlink:label="lab_us-gaap_IncomeTaxPolicyTextBlock_3BC9F403215D77AFAE32B10346A4C5CB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Income Tax, Policy [Policy Text Block] </link:label>
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<link:label id="lab_us-gaap_GoodwillAndIntangibleAssetsGoodwillPolicy_F4E9B691767D5C5DDFE3B10346A4BF92_verboseLabel_en-US" xlink:label="lab_us-gaap_GoodwillAndIntangibleAssetsGoodwillPolicy_F4E9B691767D5C5DDFE3B10346A4BF92" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Goodwill </link:label>
<link:label id="lab_us-gaap_GoodwillAndIntangibleAssetsGoodwillPolicy_F4E9B691767D5C5DDFE3B10346A4BF92_label_en-US" xlink:label="lab_us-gaap_GoodwillAndIntangibleAssetsGoodwillPolicy_F4E9B691767D5C5DDFE3B10346A4BF92" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GoodwillAndIntangibleAssetsGoodwillPolicy" xlink:label="loc_us-gaap_GoodwillAndIntangibleAssetsGoodwillPolicy_F4E9B691767D5C5DDFE3B10346A4BF92" xlink:type="locator"/>
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<link:label id="lab_us-gaap_GoodwillAndIntangibleAssetsIntangibleAssetsPolicy_C88651249311B9FDCA46B10346A4C698_terseLabel_en-US" xlink:label="lab_us-gaap_GoodwillAndIntangibleAssetsIntangibleAssetsPolicy_C88651249311B9FDCA46B10346A4C698" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Intangibles Assets </link:label>
<link:label id="lab_us-gaap_GoodwillAndIntangibleAssetsIntangibleAssetsPolicy_C88651249311B9FDCA46B10346A4C698_label_en-US" xlink:label="lab_us-gaap_GoodwillAndIntangibleAssetsIntangibleAssetsPolicy_C88651249311B9FDCA46B10346A4C698" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Goodwill and Intangible Assets, Intangible Assets, Policy [Policy Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GoodwillAndIntangibleAssetsIntangibleAssetsPolicy" xlink:label="loc_us-gaap_GoodwillAndIntangibleAssetsIntangibleAssetsPolicy_C88651249311B9FDCA46B10346A4C698" xlink:type="locator"/>
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<link:label id="lab_us-gaap_SegmentReportingPolicyPolicyTextBlock_127CDEAF9D9244D29376B10346A5BA2A_terseLabel_en-US" xlink:label="lab_us-gaap_SegmentReportingPolicyPolicyTextBlock_127CDEAF9D9244D29376B10346A5BA2A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Segment Information </link:label>
<link:label id="lab_us-gaap_SegmentReportingPolicyPolicyTextBlock_127CDEAF9D9244D29376B10346A5BA2A_label_en-US" xlink:label="lab_us-gaap_SegmentReportingPolicyPolicyTextBlock_127CDEAF9D9244D29376B10346A5BA2A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Segment Reporting, Policy [Policy Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentReportingPolicyPolicyTextBlock" xlink:label="loc_us-gaap_SegmentReportingPolicyPolicyTextBlock_127CDEAF9D9244D29376B10346A5BA2A" xlink:type="locator"/>
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<link:label id="lab_us-gaap_FairValueMeasurementPolicyPolicyTextBlock_35698E520E5455F34242B10346A58319_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueMeasurementPolicyPolicyTextBlock_35698E520E5455F34242B10346A58319" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Fair Value Measurement </link:label>
<link:label id="lab_us-gaap_FairValueMeasurementPolicyPolicyTextBlock_35698E520E5455F34242B10346A58319_label_en-US" xlink:label="lab_us-gaap_FairValueMeasurementPolicyPolicyTextBlock_35698E520E5455F34242B10346A58319" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Fair Value Measurement, Policy [Policy Text Block] </link:label>
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<link:label id="lab_us-gaap_SegmentReportingDisclosureOfEntitysReportableSegmentsAbstract_A760021A48EAF3F2CF0BA5FB90EC6833_label_en-US" xlink:label="lab_us-gaap_SegmentReportingDisclosureOfEntitysReportableSegmentsAbstract_A760021A48EAF3F2CF0BA5FB90EC6833" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Segment Reporting, Disclosure of Entity's Reportable Segments [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentReportingDisclosureOfEntitysReportableSegmentsAbstract" xlink:label="loc_us-gaap_SegmentReportingDisclosureOfEntitysReportableSegmentsAbstract_A760021A48EAF3F2CF0BA5FB90EC6833" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_42FEE11CF57A36C69105A5FB90ED15AB_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_42FEE11CF57A36C69105A5FB90ED15AB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Schedule of Segment Reporting Information, by Segment [Table] </link:label>
<link:label id="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_42FEE11CF57A36C69105A5FB90ED15AB_label_en-US" xlink:label="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_42FEE11CF57A36C69105A5FB90ED15AB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Schedule of Segment Reporting Information, by Segment [Table] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_42FEE11CF57A36C69105A5FB90ED15AB" xlink:type="locator"/>
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<link:label id="lab_srt_ConsolidationItemsAxis_6B20A06332A79B5412F9A5FB90EDD4AE_terseLabel_en-US" xlink:label="lab_srt_ConsolidationItemsAxis_6B20A06332A79B5412F9A5FB90EDD4AE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Consolidation Items [Axis] </link:label>
<link:label id="lab_srt_ConsolidationItemsAxis_6B20A06332A79B5412F9A5FB90EDD4AE_label_en-US" xlink:label="lab_srt_ConsolidationItemsAxis_6B20A06332A79B5412F9A5FB90EDD4AE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Consolidation Items [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidationItemsAxis" xlink:label="loc_srt_ConsolidationItemsAxis_6B20A06332A79B5412F9A5FB90EDD4AE" xlink:type="locator"/>
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<link:label id="lab_srt_ConsolidationItemsDomain_74E03CB92F517437195DA5FB90EDFC13_label_en-US" xlink:label="lab_srt_ConsolidationItemsDomain_74E03CB92F517437195DA5FB90EDFC13" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Consolidation Items [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="loc_srt_ConsolidationItemsDomain_74E03CB92F517437195DA5FB90EDFC13" xlink:type="locator"/>
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<link:label id="lab_us-gaap_OperatingSegmentsMember_9801965D510C4872A4A7A5FB90ED6824_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingSegmentsMember_9801965D510C4872A4A7A5FB90ED6824" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Operating Segments </link:label>
<link:label id="lab_us-gaap_OperatingSegmentsMember_9801965D510C4872A4A7A5FB90ED6824_label_en-US" xlink:label="lab_us-gaap_OperatingSegmentsMember_9801965D510C4872A4A7A5FB90ED6824" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Segments [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingSegmentsMember" xlink:label="loc_us-gaap_OperatingSegmentsMember_9801965D510C4872A4A7A5FB90ED6824" xlink:type="locator"/>
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<link:label id="lab_us-gaap_CorporateNonSegmentMember_2C2FEC72CD251D57A7EFA5FB90EE3FB9_terseLabel_en-US" xlink:label="lab_us-gaap_CorporateNonSegmentMember_2C2FEC72CD251D57A7EFA5FB90EE3FB9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Corporate, Non-Segment </link:label>
<link:label id="lab_us-gaap_CorporateNonSegmentMember_2C2FEC72CD251D57A7EFA5FB90EE3FB9_label_en-US" xlink:label="lab_us-gaap_CorporateNonSegmentMember_2C2FEC72CD251D57A7EFA5FB90EE3FB9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Corporate, Non-Segment [Member] </link:label>
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<link:label id="lab_vsec_CorporateUnallocatedMember_17E49A719EB0F4AB83FEA5FB90EF058C_terseLabel_en-US" xlink:label="lab_vsec_CorporateUnallocatedMember_17E49A719EB0F4AB83FEA5FB90EF058C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Corporate </link:label>
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<link:loc xlink:href="vsec-20191231.xsd#vsec_CorporateUnallocatedMember" xlink:label="loc_vsec_CorporateUnallocatedMember_17E49A719EB0F4AB83FEA5FB90EF058C" xlink:type="locator"/>
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<link:label id="lab_us-gaap_SegmentReportingInformationLineItems_FE82B56BC5A939B3B27FA5FB90EF0C3D_terseLabel_en-US" xlink:label="lab_us-gaap_SegmentReportingInformationLineItems_FE82B56BC5A939B3B27FA5FB90EF0C3D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Segment Reporting Information [Line Items] </link:label>
<link:label id="lab_us-gaap_SegmentReportingInformationLineItems_FE82B56BC5A939B3B27FA5FB90EF0C3D_label_en-US" xlink:label="lab_us-gaap_SegmentReportingInformationLineItems_FE82B56BC5A939B3B27FA5FB90EF0C3D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Segment Reporting Information [Line Items] </link:label>
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<link:label id="lab_us-gaap_OperatingIncomeLoss_BB142EF6E8A3589FE072A5FB90EF33ED_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingIncomeLoss_BB142EF6E8A3589FE072A5FB90EF33ED" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Operating income </link:label>
<link:label id="lab_us-gaap_OperatingIncomeLoss_BB142EF6E8A3589FE072A5FB90EF33ED_label_en-US" xlink:label="lab_us-gaap_OperatingIncomeLoss_BB142EF6E8A3589FE072A5FB90EF33ED" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Income (Loss) </link:label>
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<link:label id="lab_us-gaap_PaymentsToAcquireProductiveAssets_61A831DB75CED6C3ACE6A5FB90F07E59_terseLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireProductiveAssets_61A831DB75CED6C3ACE6A5FB90F07E59" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Capital expenditures </link:label>
<link:label id="lab_us-gaap_PaymentsToAcquireProductiveAssets_61A831DB75CED6C3ACE6A5FB90F07E59_label_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireProductiveAssets_61A831DB75CED6C3ACE6A5FB90F07E59" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Payments to Acquire Productive Assets </link:label>
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<link:label id="lab_us-gaap_Assets_F57486C31DE8769FDCE7A5FB90F0973B_verboseLabel_en-US" xlink:label="lab_us-gaap_Assets_F57486C31DE8769FDCE7A5FB90F0973B" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Total assets </link:label>
<link:label id="lab_us-gaap_Assets_F57486C31DE8769FDCE7A5FB90F0973B_label_en-US" xlink:label="lab_us-gaap_Assets_F57486C31DE8769FDCE7A5FB90F0973B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Assets </link:label>
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<link:label id="lab_us-gaap_DefinedContributionPensionAndOtherPostretirementPlansDisclosureAbstract_900D04F2E0EC073A51E0ED940C22EC09_label_en-US" xlink:label="lab_us-gaap_DefinedContributionPensionAndOtherPostretirementPlansDisclosureAbstract_900D04F2E0EC073A51E0ED940C22EC09" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Defined Contribution Plan [Abstract] </link:label>
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<link:label id="lab_us-gaap_DefinedContributionPlanCostRecognized_5DA15145D9EC226F1506ED940C2223BA_label_en-US" xlink:label="lab_us-gaap_DefinedContributionPlanCostRecognized_5DA15145D9EC226F1506ED940C2223BA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Defined Contribution Plan, Cost </link:label>
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<link:label id="lab_vsec_DocumentAndEntityInformationAbstract_F18406EBC0D18F026D48ED940B51855F_label_en-US" xlink:label="lab_vsec_DocumentAndEntityInformationAbstract_F18406EBC0D18F026D48ED940B51855F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Document and Entity Information [Abstract] </link:label>
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<link:label id="lab_dei_EntityRegistrantName_D9C21A7828B2483FAB73ED940B512FE3_terseLabel_en-US" xlink:label="lab_dei_EntityRegistrantName_D9C21A7828B2483FAB73ED940B512FE3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Entity Registrant Name </link:label>
<link:label id="lab_dei_EntityRegistrantName_D9C21A7828B2483FAB73ED940B512FE3_label_en-US" xlink:label="lab_dei_EntityRegistrantName_D9C21A7828B2483FAB73ED940B512FE3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Entity Registrant Name </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityRegistrantName" xlink:label="loc_dei_EntityRegistrantName_D9C21A7828B2483FAB73ED940B512FE3" xlink:type="locator"/>
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<link:label id="lab_dei_EntityCentralIndexKey_AB65A131300DC87632CCED940B51485B_label_en-US" xlink:label="lab_dei_EntityCentralIndexKey_AB65A131300DC87632CCED940B51485B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Entity Central Index Key </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityCentralIndexKey" xlink:label="loc_dei_EntityCentralIndexKey_AB65A131300DC87632CCED940B51485B" xlink:type="locator"/>
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<link:label id="lab_dei_CurrentFiscalYearEndDate_96DE0B6894D87F7D0714ED940B5171A8_terseLabel_en-US" xlink:label="lab_dei_CurrentFiscalYearEndDate_96DE0B6894D87F7D0714ED940B5171A8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Current Fiscal Year End Date </link:label>
<link:label id="lab_dei_CurrentFiscalYearEndDate_96DE0B6894D87F7D0714ED940B5171A8_label_en-US" xlink:label="lab_dei_CurrentFiscalYearEndDate_96DE0B6894D87F7D0714ED940B5171A8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Current Fiscal Year End Date </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_CurrentFiscalYearEndDate" xlink:label="loc_dei_CurrentFiscalYearEndDate_96DE0B6894D87F7D0714ED940B5171A8" xlink:type="locator"/>
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<link:label id="lab_dei_EntityWellKnownSeasonedIssuer_E66E0B111A159277B193ED940B51AA63_terseLabel_en-US" xlink:label="lab_dei_EntityWellKnownSeasonedIssuer_E66E0B111A159277B193ED940B51AA63" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Entity Well-known Seasoned Issuer </link:label>
<link:label id="lab_dei_EntityWellKnownSeasonedIssuer_E66E0B111A159277B193ED940B51AA63_label_en-US" xlink:label="lab_dei_EntityWellKnownSeasonedIssuer_E66E0B111A159277B193ED940B51AA63" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Entity Well-known Seasoned Issuer </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityWellKnownSeasonedIssuer" xlink:label="loc_dei_EntityWellKnownSeasonedIssuer_E66E0B111A159277B193ED940B51AA63" xlink:type="locator"/>
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<link:label id="lab_dei_EntityVoluntaryFilers_438237A4FE54ED8B7E31ED940B5291C4_terseLabel_en-US" xlink:label="lab_dei_EntityVoluntaryFilers_438237A4FE54ED8B7E31ED940B5291C4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Entity Voluntary Filers </link:label>
<link:label id="lab_dei_EntityVoluntaryFilers_438237A4FE54ED8B7E31ED940B5291C4_label_en-US" xlink:label="lab_dei_EntityVoluntaryFilers_438237A4FE54ED8B7E31ED940B5291C4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Entity Voluntary Filers </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityVoluntaryFilers" xlink:label="loc_dei_EntityVoluntaryFilers_438237A4FE54ED8B7E31ED940B5291C4" xlink:type="locator"/>
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<link:label id="lab_dei_EntityCurrentReportingStatus_2192043758B8931D6D2AED940B520FD4_terseLabel_en-US" xlink:label="lab_dei_EntityCurrentReportingStatus_2192043758B8931D6D2AED940B520FD4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Entity Current Reporting Status </link:label>
<link:label id="lab_dei_EntityCurrentReportingStatus_2192043758B8931D6D2AED940B520FD4_label_en-US" xlink:label="lab_dei_EntityCurrentReportingStatus_2192043758B8931D6D2AED940B520FD4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Entity Current Reporting Status </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityCurrentReportingStatus" xlink:label="loc_dei_EntityCurrentReportingStatus_2192043758B8931D6D2AED940B520FD4" xlink:type="locator"/>
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<link:label id="lab_dei_EntityFilerCategory_89994512D689C0018BB3ED940B52271E_terseLabel_en-US" xlink:label="lab_dei_EntityFilerCategory_89994512D689C0018BB3ED940B52271E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Entity Filer Category </link:label>
<link:label id="lab_dei_EntityFilerCategory_89994512D689C0018BB3ED940B52271E_label_en-US" xlink:label="lab_dei_EntityFilerCategory_89994512D689C0018BB3ED940B52271E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Entity Filer Category </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityFilerCategory" xlink:label="loc_dei_EntityFilerCategory_89994512D689C0018BB3ED940B52271E" xlink:type="locator"/>
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<link:label id="lab_dei_EntityShellCompany_EA8212A23ADC1D379BD0ED940B528DB1_label_en-US" xlink:label="lab_dei_EntityShellCompany_EA8212A23ADC1D379BD0ED940B528DB1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Entity Shell Company </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityShellCompany" xlink:label="loc_dei_EntityShellCompany_EA8212A23ADC1D379BD0ED940B528DB1" xlink:type="locator"/>
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<link:label id="lab_dei_EntityEmergingGrowthCompany_90F78BAC87DB927B6A18ED940B525BBD_terseLabel_en-US" xlink:label="lab_dei_EntityEmergingGrowthCompany_90F78BAC87DB927B6A18ED940B525BBD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Entity Emerging Growth Company </link:label>
<link:label id="lab_dei_EntityEmergingGrowthCompany_90F78BAC87DB927B6A18ED940B525BBD_label_en-US" xlink:label="lab_dei_EntityEmergingGrowthCompany_90F78BAC87DB927B6A18ED940B525BBD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Entity Emerging Growth Company </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityEmergingGrowthCompany" xlink:label="loc_dei_EntityEmergingGrowthCompany_90F78BAC87DB927B6A18ED940B525BBD" xlink:type="locator"/>
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<link:label id="lab_dei_EntitySmallBusiness_1CAA42FADDFE1DEB6BA6ED940B52E28E_terseLabel_en-US" xlink:label="lab_dei_EntitySmallBusiness_1CAA42FADDFE1DEB6BA6ED940B52E28E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Entity Small Business </link:label>
<link:label id="lab_dei_EntitySmallBusiness_1CAA42FADDFE1DEB6BA6ED940B52E28E_label_en-US" xlink:label="lab_dei_EntitySmallBusiness_1CAA42FADDFE1DEB6BA6ED940B52E28E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Entity Small Business </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntitySmallBusiness" xlink:label="loc_dei_EntitySmallBusiness_1CAA42FADDFE1DEB6BA6ED940B52E28E" xlink:type="locator"/>
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<link:label id="lab_us-gaap_SalesRevenueNetMember_5804816C01F0E3A0E5C3AB229178185B_terseLabel_en-US" xlink:label="lab_us-gaap_SalesRevenueNetMember_5804816C01F0E3A0E5C3AB229178185B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Revenue Benchmark </link:label>
<link:label id="lab_us-gaap_SalesRevenueNetMember_5804816C01F0E3A0E5C3AB229178185B_label_en-US" xlink:label="lab_us-gaap_SalesRevenueNetMember_5804816C01F0E3A0E5C3AB229178185B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Revenue Benchmark [Member] </link:label>
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<link:label id="lab_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_0716268B784A097FB192AB2291791326_label_en-US" xlink:label="lab_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_0716268B784A097FB192AB2291791326" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] </link:label>
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<link:label id="lab_us-gaap_UnbilledReceivablesCurrent_1F0308D68EA9C298AFF1AB229179F4A8_label_en-US" xlink:label="lab_us-gaap_UnbilledReceivablesCurrent_1F0308D68EA9C298AFF1AB229179F4A8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Unbilled Receivables, Current </link:label>
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<link:label id="lab_us-gaap_ContractWithCustomerLiability_F845A4288B0B5FFD6844AB22917917BE_terseLabel_en-US" xlink:label="lab_us-gaap_ContractWithCustomerLiability_F845A4288B0B5FFD6844AB22917917BE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Contract with customer, liability </link:label>
<link:label id="lab_us-gaap_ContractWithCustomerLiability_F845A4288B0B5FFD6844AB22917917BE_label_en-US" xlink:label="lab_us-gaap_ContractWithCustomerLiability_F845A4288B0B5FFD6844AB22917917BE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Contract with Customer, Liability </link:label>
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<link:label id="lab_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_64D3BA4A66BC06359CB9AB229179D1E2_terseLabel_en-US" xlink:label="lab_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_64D3BA4A66BC06359CB9AB229179D1E2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Contract with customer, liability, revenue recognized </link:label>
<link:label id="lab_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_64D3BA4A66BC06359CB9AB229179D1E2_label_en-US" xlink:label="lab_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_64D3BA4A66BC06359CB9AB229179D1E2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Contract with Customer, Liability, Revenue Recognized </link:label>
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<link:label id="lab_us-gaap_ConcentrationRiskPercentage1_3E5E1B34E2ABA7AFD14DAB22917A641A_label_en-US" xlink:label="lab_us-gaap_ConcentrationRiskPercentage1_3E5E1B34E2ABA7AFD14DAB22917A641A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Concentration Risk, Percentage </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ConcentrationRiskPercentage1" xlink:label="loc_us-gaap_ConcentrationRiskPercentage1_3E5E1B34E2ABA7AFD14DAB22917A641A" xlink:type="locator"/>
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<link:label id="lab_us-gaap_RevenueRemainingPerformanceObligation_94F66016DECF53A7A850AB22917A0A6F_terseLabel_en-US" xlink:label="lab_us-gaap_RevenueRemainingPerformanceObligation_94F66016DECF53A7A850AB22917A0A6F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Revenue, remaining performance obligation, amount </link:label>
<link:label id="lab_us-gaap_RevenueRemainingPerformanceObligation_94F66016DECF53A7A850AB22917A0A6F_label_en-US" xlink:label="lab_us-gaap_RevenueRemainingPerformanceObligation_94F66016DECF53A7A850AB22917A0A6F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Revenue, Remaining Performance Obligation, Amount </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevenueRemainingPerformanceObligation" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligation_94F66016DECF53A7A850AB22917A0A6F" xlink:type="locator"/>
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<link:label id="lab_us-gaap_StatementOfFinancialPositionAbstract_6B5B50D35710EB492DB3ED940C053BAC_label_en-US" xlink:label="lab_us-gaap_StatementOfFinancialPositionAbstract_6B5B50D35710EB492DB3ED940C053BAC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Statement of Financial Position [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementOfFinancialPositionAbstract" xlink:label="loc_us-gaap_StatementOfFinancialPositionAbstract_6B5B50D35710EB492DB3ED940C053BAC" xlink:type="locator"/>
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<link:label id="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_D23F467B1C3DEB4C9E94ED940C05A5DC_terseLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_D23F467B1C3DEB4C9E94ED940C05A5DC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Liabilities and Stockholders' Equity </link:label>
<link:label id="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_D23F467B1C3DEB4C9E94ED940C05A5DC_label_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_D23F467B1C3DEB4C9E94ED940C05A5DC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Liabilities and Equity [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_D23F467B1C3DEB4C9E94ED940C05A5DC" xlink:type="locator"/>
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<link:label id="lab_us-gaap_StockholdersEquityAbstract_42BBF10F5C6BD863E151ED940C056F73_terseLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquityAbstract_42BBF10F5C6BD863E151ED940C056F73" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Stockholders' equity: </link:label>
<link:label id="lab_us-gaap_StockholdersEquityAbstract_42BBF10F5C6BD863E151ED940C056F73_label_en-US" xlink:label="lab_us-gaap_StockholdersEquityAbstract_42BBF10F5C6BD863E151ED940C056F73" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Stockholders' Equity Attributable to Parent [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockholdersEquityAbstract" xlink:label="loc_us-gaap_StockholdersEquityAbstract_42BBF10F5C6BD863E151ED940C056F73" xlink:type="locator"/>
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<link:label id="lab_us-gaap_CommonStockParOrStatedValuePerShare_C31EEC02E1F9325D7ED7ED940C06A4EE_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockParOrStatedValuePerShare_C31EEC02E1F9325D7ED7ED940C06A4EE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Common stock, par value (in dollars per share) </link:label>
<link:label id="lab_us-gaap_CommonStockParOrStatedValuePerShare_C31EEC02E1F9325D7ED7ED940C06A4EE_label_en-US" xlink:label="lab_us-gaap_CommonStockParOrStatedValuePerShare_C31EEC02E1F9325D7ED7ED940C06A4EE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Common Stock, Par or Stated Value Per Share </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockParOrStatedValuePerShare" xlink:label="loc_us-gaap_CommonStockParOrStatedValuePerShare_C31EEC02E1F9325D7ED7ED940C06A4EE" xlink:type="locator"/>
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<link:label id="lab_us-gaap_CommonStockSharesAuthorized_AAEC60BACC817D6CF8B1ED940C0642BF_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockSharesAuthorized_AAEC60BACC817D6CF8B1ED940C0642BF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Common stock, authorized (in shares) </link:label>
<link:label id="lab_us-gaap_CommonStockSharesAuthorized_AAEC60BACC817D6CF8B1ED940C0642BF_label_en-US" xlink:label="lab_us-gaap_CommonStockSharesAuthorized_AAEC60BACC817D6CF8B1ED940C0642BF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Common Stock, Shares Authorized </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockSharesAuthorized" xlink:label="loc_us-gaap_CommonStockSharesAuthorized_AAEC60BACC817D6CF8B1ED940C0642BF" xlink:type="locator"/>
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<link:label id="lab_us-gaap_CommonStockSharesIssued_B3039D4CDDDD45E932DDED940C065D39_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockSharesIssued_B3039D4CDDDD45E932DDED940C065D39" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Common stock, issued (in shares) </link:label>
<link:label id="lab_us-gaap_CommonStockSharesIssued_B3039D4CDDDD45E932DDED940C065D39_label_en-US" xlink:label="lab_us-gaap_CommonStockSharesIssued_B3039D4CDDDD45E932DDED940C065D39" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Common Stock, Shares, Issued </link:label>
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<link:label id="lab_us-gaap_CommonStockSharesOutstanding_93F0BE151CDB702D0A03ED940C062503_label_en-US" xlink:label="lab_us-gaap_CommonStockSharesOutstanding_93F0BE151CDB702D0A03ED940C062503" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Common Stock, Shares, Outstanding </link:label>
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<link:label id="lab_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_0F179D94C6E21F23A91F9AF8CF821B6C_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_0F179D94C6E21F23A91F9AF8CF821B6C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Fair Value, Recurring and Nonrecurring [Table] </link:label>
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<link:label id="lab_us-gaap_FairValueByLiabilityClassAxis_3028829FC1B6B73ECA199AF8CF82997F_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueByLiabilityClassAxis_3028829FC1B6B73ECA199AF8CF82997F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Liability Class [Axis] </link:label>
<link:label id="lab_us-gaap_FairValueByLiabilityClassAxis_3028829FC1B6B73ECA199AF8CF82997F_label_en-US" xlink:label="lab_us-gaap_FairValueByLiabilityClassAxis_3028829FC1B6B73ECA199AF8CF82997F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Liability Class [Axis] </link:label>
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<link:label id="lab_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_D09166E5FBF2E7C8B4079AF8CF82F1F4_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_D09166E5FBF2E7C8B4079AF8CF82F1F4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Fair Value by Liability Class [Domain] </link:label>
<link:label id="lab_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_D09166E5FBF2E7C8B4079AF8CF82F1F4_label_en-US" xlink:label="lab_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_D09166E5FBF2E7C8B4079AF8CF82F1F4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Fair Value by Liability Class [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain" xlink:label="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_D09166E5FBF2E7C8B4079AF8CF82F1F4" xlink:type="locator"/>
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<link:label id="lab_vsec_CurrentPortionOfEarnOutObligationsMember_4C1023A0CB078FEB1F829AF8CF8210DE_terseLabel_en-US" xlink:label="lab_vsec_CurrentPortionOfEarnOutObligationsMember_4C1023A0CB078FEB1F829AF8CF8210DE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Current Portion of Earn Out Obligations </link:label>
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<link:label id="lab_vsec_CurrentPortionOfEarnOutObligationsMember_4C1023A0CB078FEB1F829AF8CF8210DE_documentation_en-US" xlink:label="lab_vsec_CurrentPortionOfEarnOutObligationsMember_4C1023A0CB078FEB1F829AF8CF8210DE" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Current Portion Of Earn Out Obligations [Member] </link:label>
<link:loc xlink:href="vsec-20191231.xsd#vsec_CurrentPortionOfEarnOutObligationsMember" xlink:label="loc_vsec_CurrentPortionOfEarnOutObligationsMember_4C1023A0CB078FEB1F829AF8CF8210DE" xlink:type="locator"/>
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<link:label id="lab_vsec_EarnOutObligationsMember_3D0BC880B982904ACC509AF8CF8285FD_terseLabel_en-US" xlink:label="lab_vsec_EarnOutObligationsMember_3D0BC880B982904ACC509AF8CF8285FD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Earn Out Obligations </link:label>
<link:label id="lab_vsec_EarnOutObligationsMember_3D0BC880B982904ACC509AF8CF8285FD_label_en-US" xlink:label="lab_vsec_EarnOutObligationsMember_3D0BC880B982904ACC509AF8CF8285FD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Earn Out Obligations [Member] </link:label>
<link:label id="lab_vsec_EarnOutObligationsMember_3D0BC880B982904ACC509AF8CF8285FD_documentation_en-US" xlink:label="lab_vsec_EarnOutObligationsMember_3D0BC880B982904ACC509AF8CF8285FD" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Earn Out Obligations [Member] </link:label>
<link:loc xlink:href="vsec-20191231.xsd#vsec_EarnOutObligationsMember" xlink:label="loc_vsec_EarnOutObligationsMember_3D0BC880B982904ACC509AF8CF8285FD" xlink:type="locator"/>
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<link:label id="lab_us-gaap_FairValueByMeasurementFrequencyAxis_D25F65898E506F000B1E9AF8CF8233F5_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueByMeasurementFrequencyAxis_D25F65898E506F000B1E9AF8CF8233F5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Measurement Frequency [Axis] </link:label>
<link:label id="lab_us-gaap_FairValueByMeasurementFrequencyAxis_D25F65898E506F000B1E9AF8CF8233F5_label_en-US" xlink:label="lab_us-gaap_FairValueByMeasurementFrequencyAxis_D25F65898E506F000B1E9AF8CF8233F5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Measurement Frequency [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueByMeasurementFrequencyAxis" xlink:label="loc_us-gaap_FairValueByMeasurementFrequencyAxis_D25F65898E506F000B1E9AF8CF8233F5" xlink:type="locator"/>
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<link:label id="lab_us-gaap_FairValueMeasurementFrequencyDomain_E6F96C12C5155BD0312A9AF8CF82577B_label_en-US" xlink:label="lab_us-gaap_FairValueMeasurementFrequencyDomain_E6F96C12C5155BD0312A9AF8CF82577B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Measurement Frequency [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_E6F96C12C5155BD0312A9AF8CF82577B" xlink:type="locator"/>
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<link:label id="lab_us-gaap_FairValueMeasurementsRecurringMember_46B79FA2AC1208005A139AF8CF824648_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueMeasurementsRecurringMember_46B79FA2AC1208005A139AF8CF824648" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Fair Value, Measurements, Recurring </link:label>
<link:label id="lab_us-gaap_FairValueMeasurementsRecurringMember_46B79FA2AC1208005A139AF8CF824648_label_en-US" xlink:label="lab_us-gaap_FairValueMeasurementsRecurringMember_46B79FA2AC1208005A139AF8CF824648" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Fair Value, Recurring [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementsRecurringMember" xlink:label="loc_us-gaap_FairValueMeasurementsRecurringMember_46B79FA2AC1208005A139AF8CF824648" xlink:type="locator"/>
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<link:label id="lab_us-gaap_BalanceSheetLocationAxis_D5A52C8E9A77A1367CC69AF8CF82A2E3_terseLabel_en-US" xlink:label="lab_us-gaap_BalanceSheetLocationAxis_D5A52C8E9A77A1367CC69AF8CF82A2E3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Balance Sheet Location [Axis] </link:label>
<link:label id="lab_us-gaap_BalanceSheetLocationAxis_D5A52C8E9A77A1367CC69AF8CF82A2E3_label_en-US" xlink:label="lab_us-gaap_BalanceSheetLocationAxis_D5A52C8E9A77A1367CC69AF8CF82A2E3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Balance Sheet Location [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationAxis" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_D5A52C8E9A77A1367CC69AF8CF82A2E3" xlink:type="locator"/>
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<link:label id="lab_us-gaap_BalanceSheetLocationDomain_1B20CFF23A9371F83DBD9AF8CF823953_terseLabel_en-US" xlink:label="lab_us-gaap_BalanceSheetLocationDomain_1B20CFF23A9371F83DBD9AF8CF823953" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Balance Sheet Location [Domain] </link:label>
<link:label id="lab_us-gaap_BalanceSheetLocationDomain_1B20CFF23A9371F83DBD9AF8CF823953_label_en-US" xlink:label="lab_us-gaap_BalanceSheetLocationDomain_1B20CFF23A9371F83DBD9AF8CF823953" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Balance Sheet Location [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_1B20CFF23A9371F83DBD9AF8CF823953" xlink:type="locator"/>
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<link:label id="lab_us-gaap_OtherAssetsMember_A03E27357DF7442EBC3A9AF8CF82CF9C_terseLabel_en-US" xlink:label="lab_us-gaap_OtherAssetsMember_A03E27357DF7442EBC3A9AF8CF82CF9C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other assets </link:label>
<link:label id="lab_us-gaap_OtherAssetsMember_A03E27357DF7442EBC3A9AF8CF82CF9C_label_en-US" xlink:label="lab_us-gaap_OtherAssetsMember_A03E27357DF7442EBC3A9AF8CF82CF9C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Assets [Member] </link:label>
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<link:label id="lab_us-gaap_OtherCurrentAssetsMember_E201DE7908E86365F0039AF8CF822EBE_terseLabel_en-US" xlink:label="lab_us-gaap_OtherCurrentAssetsMember_E201DE7908E86365F0039AF8CF822EBE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other current assets </link:label>
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<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherCurrentAssetsMember" xlink:label="loc_us-gaap_OtherCurrentAssetsMember_E201DE7908E86365F0039AF8CF822EBE" xlink:type="locator"/>
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<link:label id="lab_us-gaap_FairValueByFairValueHierarchyLevelAxis_C7ECADBFA70F80B85FE99AF8CF823F14_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueByFairValueHierarchyLevelAxis_C7ECADBFA70F80B85FE99AF8CF823F14" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Fair Value Hierarchy and NAV [Axis] </link:label>
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<link:label id="lab_us-gaap_FairValueInputsLevel1Member_92B4696E8F87F79303739AF8CF82F087_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueInputsLevel1Member_92B4696E8F87F79303739AF8CF82F087" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Level 1 </link:label>
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<link:label id="lab_us-gaap_FairValueInputsLevel3Member_0B75C2882642940622859AF8CF82F0CA_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueInputsLevel3Member_0B75C2882642940622859AF8CF82F0CA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Level 3 </link:label>
<link:label id="lab_us-gaap_FairValueInputsLevel3Member_0B75C2882642940622859AF8CF82F0CA_label_en-US" xlink:label="lab_us-gaap_FairValueInputsLevel3Member_0B75C2882642940622859AF8CF82F0CA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Fair Value, Inputs, Level 3 [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueInputsLevel3Member" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_0B75C2882642940622859AF8CF82F0CA" xlink:type="locator"/>
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<link:label id="lab_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_338EAED44F76442BA4339AF8CF82AF10_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_338EAED44F76442BA4339AF8CF82AF10" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] </link:label>
<link:label id="lab_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_338EAED44F76442BA4339AF8CF82AF10_label_en-US" xlink:label="lab_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_338EAED44F76442BA4339AF8CF82AF10" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_338EAED44F76442BA4339AF8CF82AF10" xlink:type="locator"/>
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<link:label id="lab_vsec_MutualFundsHeldInDscPlanFairValueDisclosure_154AE29561F7EAC333A39AF8CF82FB3A_terseLabel_en-US" xlink:label="lab_vsec_MutualFundsHeldInDscPlanFairValueDisclosure_154AE29561F7EAC333A39AF8CF82FB3A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Non-COLI assets held in Deferred Supplemental Compensation Plan </link:label>
<link:label id="lab_vsec_MutualFundsHeldInDscPlanFairValueDisclosure_154AE29561F7EAC333A39AF8CF82FB3A_label_en-US" xlink:label="lab_vsec_MutualFundsHeldInDscPlanFairValueDisclosure_154AE29561F7EAC333A39AF8CF82FB3A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Mutual Funds Held In Dsc Plan Fair Value Disclosure </link:label>
<link:label id="lab_vsec_MutualFundsHeldInDscPlanFairValueDisclosure_154AE29561F7EAC333A39AF8CF82FB3A_documentation_en-US" xlink:label="lab_vsec_MutualFundsHeldInDscPlanFairValueDisclosure_154AE29561F7EAC333A39AF8CF82FB3A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This element represents the fair value of mutual funds held in DSC plan. </link:label>
<link:loc xlink:href="vsec-20191231.xsd#vsec_MutualFundsHeldInDscPlanFairValueDisclosure" xlink:label="loc_vsec_MutualFundsHeldInDscPlanFairValueDisclosure_154AE29561F7EAC333A39AF8CF82FB3A" xlink:type="locator"/>
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<link:label id="lab_us-gaap_InterestRateDerivativeLiabilitiesAtFairValue_E6BFE0453482C88BF6BA9AF8CF82EB68_terseLabel_en-US" xlink:label="lab_us-gaap_InterestRateDerivativeLiabilitiesAtFairValue_E6BFE0453482C88BF6BA9AF8CF82EB68" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Interest rate swaps </link:label>
<link:label id="lab_us-gaap_InterestRateDerivativeLiabilitiesAtFairValue_E6BFE0453482C88BF6BA9AF8CF82EB68_label_en-US" xlink:label="lab_us-gaap_InterestRateDerivativeLiabilitiesAtFairValue_E6BFE0453482C88BF6BA9AF8CF82EB68" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Interest Rate Derivative Liabilities, at Fair Value </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestRateDerivativeLiabilitiesAtFairValue" xlink:label="loc_us-gaap_InterestRateDerivativeLiabilitiesAtFairValue_E6BFE0453482C88BF6BA9AF8CF82EB68" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InterestRateDerivativeLiabilitiesAtFairValue_E6BFE0453482C88BF6BA9AF8CF82EB68" xlink:to="lab_us-gaap_InterestRateDerivativeLiabilitiesAtFairValue_E6BFE0453482C88BF6BA9AF8CF82EB68" xlink:type="arc"/>
<link:label id="lab_vsec_CurrentPortionOfEarnOutObligationFairValueDisclosure_F9B94568D3331D59AC049AF8CF82EDFD_verboseLabel_en-US" xlink:label="lab_vsec_CurrentPortionOfEarnOutObligationFairValueDisclosure_F9B94568D3331D59AC049AF8CF82EDFD" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Earn-out obligation-current </link:label>
<link:label id="lab_vsec_CurrentPortionOfEarnOutObligationFairValueDisclosure_F9B94568D3331D59AC049AF8CF82EDFD_label_en-US" xlink:label="lab_vsec_CurrentPortionOfEarnOutObligationFairValueDisclosure_F9B94568D3331D59AC049AF8CF82EDFD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Current Portion Of Earn Out Obligation Fair Value Disclosure </link:label>
<link:label id="lab_vsec_CurrentPortionOfEarnOutObligationFairValueDisclosure_F9B94568D3331D59AC049AF8CF82EDFD_documentation_en-US" xlink:label="lab_vsec_CurrentPortionOfEarnOutObligationFairValueDisclosure_F9B94568D3331D59AC049AF8CF82EDFD" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> This element represents fair value of recognized liabilities arising from a contingency assumed in a business combination. </link:label>
<link:loc xlink:href="vsec-20191231.xsd#vsec_CurrentPortionOfEarnOutObligationFairValueDisclosure" xlink:label="loc_vsec_CurrentPortionOfEarnOutObligationFairValueDisclosure_F9B94568D3331D59AC049AF8CF82EDFD" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_vsec_CurrentPortionOfEarnOutObligationFairValueDisclosure_F9B94568D3331D59AC049AF8CF82EDFD" xlink:to="lab_vsec_CurrentPortionOfEarnOutObligationFairValueDisclosure_F9B94568D3331D59AC049AF8CF82EDFD" xlink:type="arc"/>
<link:label id="lab_vsec_EarnOutObligationsFairValueDisclosure_75BFCC17A20C5B60A1E79AF8CF828456_verboseLabel_en-US" xlink:label="lab_vsec_EarnOutObligationsFairValueDisclosure_75BFCC17A20C5B60A1E79AF8CF828456" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Earn-out obligation-long-term </link:label>
<link:label id="lab_vsec_EarnOutObligationsFairValueDisclosure_75BFCC17A20C5B60A1E79AF8CF828456_label_en-US" xlink:label="lab_vsec_EarnOutObligationsFairValueDisclosure_75BFCC17A20C5B60A1E79AF8CF828456" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Earn Out Obligations Fair Value Disclosure </link:label>
<link:label id="lab_vsec_EarnOutObligationsFairValueDisclosure_75BFCC17A20C5B60A1E79AF8CF828456_documentation_en-US" xlink:label="lab_vsec_EarnOutObligationsFairValueDisclosure_75BFCC17A20C5B60A1E79AF8CF828456" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> This element represents recognized liabilities arising from a contingency assumed in a business combination. </link:label>
<link:loc xlink:href="vsec-20191231.xsd#vsec_EarnOutObligationsFairValueDisclosure" xlink:label="loc_vsec_EarnOutObligationsFairValueDisclosure_75BFCC17A20C5B60A1E79AF8CF828456" xlink:type="locator"/>
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<link:label id="lab_us-gaap_QuarterlyFinancialDataAbstract_F39739B62D682BC6BC9742ED891A99B3_label_en-US" xlink:label="lab_us-gaap_QuarterlyFinancialDataAbstract_F39739B62D682BC6BC9742ED891A99B3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Quarterly Financial Data [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_QuarterlyFinancialDataAbstract" xlink:label="loc_us-gaap_QuarterlyFinancialDataAbstract_F39739B62D682BC6BC9742ED891A99B3" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_QuarterlyFinancialDataAbstract_F39739B62D682BC6BC9742ED891A99B3" xlink:to="lab_us-gaap_QuarterlyFinancialDataAbstract_F39739B62D682BC6BC9742ED891A99B3" xlink:type="arc"/>
<link:label id="lab_us-gaap_QuarterlyFinancialInformationTextBlock_07E938D9B7E3AC76DDE142ED891A2EB8_verboseLabel_en-US" xlink:label="lab_us-gaap_QuarterlyFinancialInformationTextBlock_07E938D9B7E3AC76DDE142ED891A2EB8" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Selected Quarterly Data (Unaudited) </link:label>
<link:label id="lab_us-gaap_QuarterlyFinancialInformationTextBlock_07E938D9B7E3AC76DDE142ED891A2EB8_label_en-US" xlink:label="lab_us-gaap_QuarterlyFinancialInformationTextBlock_07E938D9B7E3AC76DDE142ED891A2EB8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Quarterly Financial Information [Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_QuarterlyFinancialInformationTextBlock" xlink:label="loc_us-gaap_QuarterlyFinancialInformationTextBlock_07E938D9B7E3AC76DDE142ED891A2EB8" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_QuarterlyFinancialInformationTextBlock_07E938D9B7E3AC76DDE142ED891A2EB8" xlink:to="lab_us-gaap_QuarterlyFinancialInformationTextBlock_07E938D9B7E3AC76DDE142ED891A2EB8" xlink:type="arc"/>
<link:label id="lab_us-gaap_BusinessCombinationDisclosureTextBlock_3AE9FDA490713BCF648DAB2A242EB29A_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessCombinationDisclosureTextBlock_3AE9FDA490713BCF648DAB2A242EB29A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Acquisition </link:label>
<link:label id="lab_us-gaap_BusinessCombinationDisclosureTextBlock_3AE9FDA490713BCF648DAB2A242EB29A_label_en-US" xlink:label="lab_us-gaap_BusinessCombinationDisclosureTextBlock_3AE9FDA490713BCF648DAB2A242EB29A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Business Combination Disclosure [Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessCombinationDisclosureTextBlock" xlink:label="loc_us-gaap_BusinessCombinationDisclosureTextBlock_3AE9FDA490713BCF648DAB2A242EB29A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessCombinationDisclosureTextBlock_3AE9FDA490713BCF648DAB2A242EB29A" xlink:to="lab_us-gaap_BusinessCombinationDisclosureTextBlock_3AE9FDA490713BCF648DAB2A242EB29A" xlink:type="arc"/>
<link:label id="lab_us-gaap_PropertyPlantAndEquipmentAbstract_5D0C85F4744A6BCD35F042ED8A1C969A_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentAbstract_5D0C85F4744A6BCD35F042ED8A1C969A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Property, Plant and Equipment [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentAbstract" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAbstract_5D0C85F4744A6BCD35F042ED8A1C969A" xlink:type="locator"/>
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<link:label id="lab_us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock_A6F0D4B22FF91CBB78AE42ED8A1CFC6C_verboseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock_A6F0D4B22FF91CBB78AE42ED8A1CFC6C" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Property and Equipment </link:label>
<link:label id="lab_us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock_A6F0D4B22FF91CBB78AE42ED8A1CFC6C_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock_A6F0D4B22FF91CBB78AE42ED8A1CFC6C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Property, Plant and Equipment Disclosure [Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock_A6F0D4B22FF91CBB78AE42ED8A1CFC6C" xlink:type="locator"/>
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<link:label id="lab_us-gaap_StatementOfCashFlowsAbstract_204F78D3A20B9548BCCEB13416CF31AC_label_en-US" xlink:label="lab_us-gaap_StatementOfCashFlowsAbstract_204F78D3A20B9548BCCEB13416CF31AC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Statement of Cash Flows [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementOfCashFlowsAbstract" xlink:label="loc_us-gaap_StatementOfCashFlowsAbstract_204F78D3A20B9548BCCEB13416CF31AC" xlink:type="locator"/>
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<link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_C0277BBC66EE7D430399B13416CF4FC0_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_C0277BBC66EE7D430399B13416CF4FC0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Cash flows from operating activities: </link:label>
<link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_C0277BBC66EE7D430399B13416CF4FC0_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_C0277BBC66EE7D430399B13416CF4FC0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Net Cash Provided by (Used in) Operating Activities [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_C0277BBC66EE7D430399B13416CF4FC0" xlink:type="locator"/>
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<link:label id="lab_us-gaap_NetIncomeLoss_93F3E724D31EB0F99DF9B13416CFF3E7_terseLabel_en-US" xlink:label="lab_us-gaap_NetIncomeLoss_93F3E724D31EB0F99DF9B13416CFF3E7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Net income </link:label>
<link:label id="lab_us-gaap_NetIncomeLoss_93F3E724D31EB0F99DF9B13416CFF3E7_label_en-US" xlink:label="lab_us-gaap_NetIncomeLoss_93F3E724D31EB0F99DF9B13416CFF3E7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Net Income (Loss) Attributable to Parent </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_93F3E724D31EB0F99DF9B13416CFF3E7" xlink:type="locator"/>
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<link:label id="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_70A22ACFA476D3DC8F4BB13416D095DD_terseLabel_en-US" xlink:label="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_70A22ACFA476D3DC8F4BB13416D095DD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Adjustments to reconcile net income to net cash provided by operating activities: </link:label>
<link:label id="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_70A22ACFA476D3DC8F4BB13416D095DD_label_en-US" xlink:label="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_70A22ACFA476D3DC8F4BB13416D095DD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_70A22ACFA476D3DC8F4BB13416D095DD" xlink:type="locator"/>
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<link:label id="lab_us-gaap_DepreciationDepletionAndAmortization_C6AC79A72B3D2895BB8EB13416D04C95_terseLabel_en-US" xlink:label="lab_us-gaap_DepreciationDepletionAndAmortization_C6AC79A72B3D2895BB8EB13416D04C95" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Depreciation and amortization </link:label>
<link:label id="lab_us-gaap_DepreciationDepletionAndAmortization_C6AC79A72B3D2895BB8EB13416D04C95_label_en-US" xlink:label="lab_us-gaap_DepreciationDepletionAndAmortization_C6AC79A72B3D2895BB8EB13416D04C95" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Depreciation, Depletion and Amortization </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DepreciationDepletionAndAmortization" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_C6AC79A72B3D2895BB8EB13416D04C95" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DepreciationDepletionAndAmortization_C6AC79A72B3D2895BB8EB13416D04C95" xlink:to="lab_us-gaap_DepreciationDepletionAndAmortization_C6AC79A72B3D2895BB8EB13416D04C95" xlink:type="arc"/>
<link:label id="lab_us-gaap_DeferredIncomeTaxesAndTaxCredits_2C362D7749E085C76F3EB13416D0F0C4_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredIncomeTaxesAndTaxCredits_2C362D7749E085C76F3EB13416D0F0C4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Deferred taxes </link:label>
<link:label id="lab_us-gaap_DeferredIncomeTaxesAndTaxCredits_2C362D7749E085C76F3EB13416D0F0C4_label_en-US" xlink:label="lab_us-gaap_DeferredIncomeTaxesAndTaxCredits_2C362D7749E085C76F3EB13416D0F0C4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Deferred Income Taxes and Tax Credits </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredIncomeTaxesAndTaxCredits" xlink:label="loc_us-gaap_DeferredIncomeTaxesAndTaxCredits_2C362D7749E085C76F3EB13416D0F0C4" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DeferredIncomeTaxesAndTaxCredits_2C362D7749E085C76F3EB13416D0F0C4" xlink:to="lab_us-gaap_DeferredIncomeTaxesAndTaxCredits_2C362D7749E085C76F3EB13416D0F0C4" xlink:type="arc"/>
<link:label id="lab_us-gaap_ShareBasedCompensation_C036291EBA775373AF5FB13416D0706E_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensation_C036291EBA775373AF5FB13416D0706E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Stock-based compensation </link:label>
<link:label id="lab_us-gaap_ShareBasedCompensation_C036291EBA775373AF5FB13416D0706E_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensation_C036291EBA775373AF5FB13416D0706E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Payment Arrangement, Noncash Expense </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensation" xlink:label="loc_us-gaap_ShareBasedCompensation_C036291EBA775373AF5FB13416D0706E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensation_C036291EBA775373AF5FB13416D0706E" xlink:to="lab_us-gaap_ShareBasedCompensation_C036291EBA775373AF5FB13416D0706E" xlink:type="arc"/>
<link:label id="lab_vsec_GainLossonSaleofContract_ABB1E58CFD33064B5D67B13416D1D663_negatedTerseLabel_en-US" xlink:label="lab_vsec_GainLossonSaleofContract_ABB1E58CFD33064B5D67B13416D1D663" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Gain on sale of contract </link:label>
<link:label id="lab_vsec_GainLossonSaleofContract_ABB1E58CFD33064B5D67B13416D1D663_label_en-US" xlink:label="lab_vsec_GainLossonSaleofContract_ABB1E58CFD33064B5D67B13416D1D663" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Gain (Loss) on Sale of Contract </link:label>
<link:label id="lab_vsec_GainLossonSaleofContract_ABB1E58CFD33064B5D67B13416D1D663_documentation_en-US" xlink:label="lab_vsec_GainLossonSaleofContract_ABB1E58CFD33064B5D67B13416D1D663" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Gain (Loss) on Sale of Contract </link:label>
<link:loc xlink:href="vsec-20191231.xsd#vsec_GainLossonSaleofContract" xlink:label="loc_vsec_GainLossonSaleofContract_ABB1E58CFD33064B5D67B13416D1D663" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_vsec_GainLossonSaleofContract_ABB1E58CFD33064B5D67B13416D1D663" xlink:to="lab_vsec_GainLossonSaleofContract_ABB1E58CFD33064B5D67B13416D1D663" xlink:type="arc"/>
<link:label id="lab_vsec_IncreaseDecreaseinEarnOutObligationFairValueDisclosure_6FC67F1175A6BDA7578BB13416D1B2EF_terseLabel_en-US" xlink:label="lab_vsec_IncreaseDecreaseinEarnOutObligationFairValueDisclosure_6FC67F1175A6BDA7578BB13416D1B2EF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Earn-out obligation adjustment </link:label>
<link:label id="lab_vsec_IncreaseDecreaseinEarnOutObligationFairValueDisclosure_6FC67F1175A6BDA7578BB13416D1B2EF_label_en-US" xlink:label="lab_vsec_IncreaseDecreaseinEarnOutObligationFairValueDisclosure_6FC67F1175A6BDA7578BB13416D1B2EF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Increase (Decrease) in Earn Out Obligation, Fair Value Disclosure </link:label>
<link:label id="lab_vsec_IncreaseDecreaseinEarnOutObligationFairValueDisclosure_6FC67F1175A6BDA7578BB13416D1B2EF_documentation_en-US" xlink:label="lab_vsec_IncreaseDecreaseinEarnOutObligationFairValueDisclosure_6FC67F1175A6BDA7578BB13416D1B2EF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Increase (Decrease) in Earn Out Obligation, Fair Value Disclosure </link:label>
<link:loc xlink:href="vsec-20191231.xsd#vsec_IncreaseDecreaseinEarnOutObligationFairValueDisclosure" xlink:label="loc_vsec_IncreaseDecreaseinEarnOutObligationFairValueDisclosure_6FC67F1175A6BDA7578BB13416D1B2EF" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_vsec_IncreaseDecreaseinEarnOutObligationFairValueDisclosure_6FC67F1175A6BDA7578BB13416D1B2EF" xlink:to="lab_vsec_IncreaseDecreaseinEarnOutObligationFairValueDisclosure_6FC67F1175A6BDA7578BB13416D1B2EF" xlink:type="arc"/>
<link:label id="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_9E348EDDEF45111A6E86B13416D18ED6_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_9E348EDDEF45111A6E86B13416D18ED6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Changes in operating assets and liabilities, net of impact of acquisitions: </link:label>
<link:label id="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_9E348EDDEF45111A6E86B13416D18ED6_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_9E348EDDEF45111A6E86B13416D18ED6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Increase (Decrease) in Operating Capital [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:label="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_9E348EDDEF45111A6E86B13416D18ED6" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_9E348EDDEF45111A6E86B13416D18ED6" xlink:to="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_9E348EDDEF45111A6E86B13416D18ED6" xlink:type="arc"/>
<link:label id="lab_us-gaap_IncreaseDecreaseInAccountsReceivable_5FB76499E1FCF1CC3738B13416D1F50A_negatedLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccountsReceivable_5FB76499E1FCF1CC3738B13416D1F50A" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Receivables </link:label>
<link:label id="lab_us-gaap_IncreaseDecreaseInAccountsReceivable_5FB76499E1FCF1CC3738B13416D1F50A_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccountsReceivable_5FB76499E1FCF1CC3738B13416D1F50A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Increase (Decrease) in Accounts Receivable </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_5FB76499E1FCF1CC3738B13416D1F50A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_5FB76499E1FCF1CC3738B13416D1F50A" xlink:to="lab_us-gaap_IncreaseDecreaseInAccountsReceivable_5FB76499E1FCF1CC3738B13416D1F50A" xlink:type="arc"/>
<link:label id="lab_us-gaap_IncreaseDecreaseInContractWithCustomerAsset_C63E33527D5D5E30B278B13416D1F781_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInContractWithCustomerAsset_C63E33527D5D5E30B278B13416D1F781" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Unbilled receivables </link:label>
<link:label id="lab_us-gaap_IncreaseDecreaseInContractWithCustomerAsset_C63E33527D5D5E30B278B13416D1F781_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInContractWithCustomerAsset_C63E33527D5D5E30B278B13416D1F781" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Increase (Decrease) in Contract with Customer, Asset </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInContractWithCustomerAsset" xlink:label="loc_us-gaap_IncreaseDecreaseInContractWithCustomerAsset_C63E33527D5D5E30B278B13416D1F781" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInContractWithCustomerAsset_C63E33527D5D5E30B278B13416D1F781" xlink:to="lab_us-gaap_IncreaseDecreaseInContractWithCustomerAsset_C63E33527D5D5E30B278B13416D1F781" xlink:type="arc"/>
<link:label id="lab_us-gaap_IncreaseDecreaseInInventories_CCF6AD12AD2E77B0C579B13416D1C932_negatedLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInInventories_CCF6AD12AD2E77B0C579B13416D1C932" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Inventories </link:label>
<link:label id="lab_us-gaap_IncreaseDecreaseInInventories_CCF6AD12AD2E77B0C579B13416D1C932_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInInventories_CCF6AD12AD2E77B0C579B13416D1C932" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Increase (Decrease) in Inventories </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInInventories" xlink:label="loc_us-gaap_IncreaseDecreaseInInventories_CCF6AD12AD2E77B0C579B13416D1C932" xlink:type="locator"/>
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<link:label id="lab_us-gaap_IncreaseDecreaseInOtherOperatingAssets_11170BDF38F3FEEE933FB13416D21490_negatedLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOtherOperatingAssets_11170BDF38F3FEEE933FB13416D21490" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Other current assets and noncurrent assets </link:label>
<link:label id="lab_us-gaap_IncreaseDecreaseInOtherOperatingAssets_11170BDF38F3FEEE933FB13416D21490_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOtherOperatingAssets_11170BDF38F3FEEE933FB13416D21490" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Increase (Decrease) in Other Operating Assets </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInOtherOperatingAssets" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingAssets_11170BDF38F3FEEE933FB13416D21490" xlink:type="locator"/>
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<link:label id="lab_us-gaap_IncreaseDecreaseInAccountsPayable_C88AC47C054B56140896B13416D214DE_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccountsPayable_C88AC47C054B56140896B13416D214DE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accounts payable and deferred compensation </link:label>
<link:label id="lab_us-gaap_IncreaseDecreaseInAccountsPayable_C88AC47C054B56140896B13416D214DE_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccountsPayable_C88AC47C054B56140896B13416D214DE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Increase (Decrease) in Accounts Payable </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayable" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayable_C88AC47C054B56140896B13416D214DE" xlink:type="locator"/>
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<link:label id="lab_us-gaap_IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities_75840ED10BCA43B9C6C3B13416D2A51C_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities_75840ED10BCA43B9C6C3B13416D2A51C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accrued expenses and other current liabilities </link:label>
<link:label id="lab_us-gaap_IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities_75840ED10BCA43B9C6C3B13416D2A51C_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities_75840ED10BCA43B9C6C3B13416D2A51C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Increase (Decrease) in Other Accounts Payable and Accrued Liabilities </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities_75840ED10BCA43B9C6C3B13416D2A51C" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities_75840ED10BCA43B9C6C3B13416D2A51C" xlink:to="lab_us-gaap_IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities_75840ED10BCA43B9C6C3B13416D2A51C" xlink:type="arc"/>
<link:label id="lab_vsec_LongTermLeaseObligation_3CBFE6B62F7BE0BACBF6B13416D260A4_negatedLabel_en-US" xlink:label="lab_vsec_LongTermLeaseObligation_3CBFE6B62F7BE0BACBF6B13416D260A4" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Long-term lease obligations </link:label>
<link:label id="lab_vsec_LongTermLeaseObligation_3CBFE6B62F7BE0BACBF6B13416D260A4_label_en-US" xlink:label="lab_vsec_LongTermLeaseObligation_3CBFE6B62F7BE0BACBF6B13416D260A4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Long-term lease obligation </link:label>
<link:label id="lab_vsec_LongTermLeaseObligation_3CBFE6B62F7BE0BACBF6B13416D260A4_documentation_en-US" xlink:label="lab_vsec_LongTermLeaseObligation_3CBFE6B62F7BE0BACBF6B13416D260A4" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Amount of long-term leases due within one year or the normal operating cycle, if longer. </link:label>
<link:loc xlink:href="vsec-20191231.xsd#vsec_LongTermLeaseObligation" xlink:label="loc_vsec_LongTermLeaseObligation_3CBFE6B62F7BE0BACBF6B13416D260A4" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_vsec_LongTermLeaseObligation_3CBFE6B62F7BE0BACBF6B13416D260A4" xlink:to="lab_vsec_LongTermLeaseObligation_3CBFE6B62F7BE0BACBF6B13416D260A4" xlink:type="arc"/>
<link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_678AE82F7768C15D7CB3B13416D21D95_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_678AE82F7768C15D7CB3B13416D21D95" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Net cash provided by operating activities </link:label>
<link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_678AE82F7768C15D7CB3B13416D21D95_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_678AE82F7768C15D7CB3B13416D21D95" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Net Cash Provided by (Used in) Operating Activities </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_678AE82F7768C15D7CB3B13416D21D95" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_678AE82F7768C15D7CB3B13416D21D95" xlink:to="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_678AE82F7768C15D7CB3B13416D21D95" xlink:type="arc"/>
<link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_19CB4B43E630B39D39F3B13416D2A0D4_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_19CB4B43E630B39D39F3B13416D2A0D4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Cash flows from investing activities: </link:label>
<link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_19CB4B43E630B39D39F3B13416D2A0D4_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_19CB4B43E630B39D39F3B13416D2A0D4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Net Cash Provided by (Used in) Investing Activities [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_19CB4B43E630B39D39F3B13416D2A0D4" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_19CB4B43E630B39D39F3B13416D2A0D4" xlink:to="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_19CB4B43E630B39D39F3B13416D2A0D4" xlink:type="arc"/>
<link:label id="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_17599DC88A6EDDF9438DB13416D2C937_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_17599DC88A6EDDF9438DB13416D2C937" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Purchases of property and equipment </link:label>
<link:label id="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_17599DC88A6EDDF9438DB13416D2C937_label_en-US" xlink:label="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_17599DC88A6EDDF9438DB13416D2C937" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Payments to Acquire Property, Plant, and Equipment </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_17599DC88A6EDDF9438DB13416D2C937" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_17599DC88A6EDDF9438DB13416D2C937" xlink:to="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_17599DC88A6EDDF9438DB13416D2C937" xlink:type="arc"/>
<link:label id="lab_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_214C31B1BF4147767A87B13416D3FEDE_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_214C31B1BF4147767A87B13416D3FEDE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Proceeds from the sale of property and equipment </link:label>
<link:label id="lab_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_214C31B1BF4147767A87B13416D3FEDE_label_en-US" xlink:label="lab_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_214C31B1BF4147767A87B13416D3FEDE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Proceeds from Sale of Property, Plant, and Equipment </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment" xlink:label="loc_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_214C31B1BF4147767A87B13416D3FEDE" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_214C31B1BF4147767A87B13416D3FEDE" xlink:to="lab_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_214C31B1BF4147767A87B13416D3FEDE" xlink:type="arc"/>
<link:label id="lab_vsec_ProceedsfromSaleofContract_36A820EB729D3CA20A39B13416D3840F_terseLabel_en-US" xlink:label="lab_vsec_ProceedsfromSaleofContract_36A820EB729D3CA20A39B13416D3840F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Proceeds from the sale of contract </link:label>
<link:label id="lab_vsec_ProceedsfromSaleofContract_36A820EB729D3CA20A39B13416D3840F_label_en-US" xlink:label="lab_vsec_ProceedsfromSaleofContract_36A820EB729D3CA20A39B13416D3840F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Proceeds from Sale of Contract </link:label>
<link:label id="lab_vsec_ProceedsfromSaleofContract_36A820EB729D3CA20A39B13416D3840F_documentation_en-US" xlink:label="lab_vsec_ProceedsfromSaleofContract_36A820EB729D3CA20A39B13416D3840F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Proceeds from Sale of Contract </link:label>
<link:loc xlink:href="vsec-20191231.xsd#vsec_ProceedsfromSaleofContract" xlink:label="loc_vsec_ProceedsfromSaleofContract_36A820EB729D3CA20A39B13416D3840F" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_vsec_ProceedsfromSaleofContract_36A820EB729D3CA20A39B13416D3840F" xlink:to="lab_vsec_ProceedsfromSaleofContract_36A820EB729D3CA20A39B13416D3840F" xlink:type="arc"/>
<link:label id="lab_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_B2EE1385AA3039CAB224B13416D3191B_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_B2EE1385AA3039CAB224B13416D3191B" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Cash paid for acquisitions, net of cash acquired </link:label>
<link:label id="lab_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_B2EE1385AA3039CAB224B13416D3191B_label_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_B2EE1385AA3039CAB224B13416D3191B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Payments to Acquire Businesses, Net of Cash Acquired </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_B2EE1385AA3039CAB224B13416D3191B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_B2EE1385AA3039CAB224B13416D3191B" xlink:to="lab_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_B2EE1385AA3039CAB224B13416D3191B" xlink:type="arc"/>
<link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_356D7FC2014F0600374AB13416D36A79_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_356D7FC2014F0600374AB13416D36A79" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Net cash used in investing activities </link:label>
<link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_356D7FC2014F0600374AB13416D36A79_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_356D7FC2014F0600374AB13416D36A79" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Net Cash Provided by (Used in) Investing Activities </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_356D7FC2014F0600374AB13416D36A79" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_356D7FC2014F0600374AB13416D36A79" xlink:to="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_356D7FC2014F0600374AB13416D36A79" xlink:type="arc"/>
<link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_A29F131F244767C84EA3B13416D4A0E2_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_A29F131F244767C84EA3B13416D4A0E2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Cash flows from financing activities: </link:label>
<link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_A29F131F244767C84EA3B13416D4A0E2_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_A29F131F244767C84EA3B13416D4A0E2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Net Cash Provided by (Used in) Financing Activities [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_A29F131F244767C84EA3B13416D4A0E2" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_A29F131F244767C84EA3B13416D4A0E2" xlink:to="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_A29F131F244767C84EA3B13416D4A0E2" xlink:type="arc"/>
<link:label id="lab_us-gaap_ProceedsFromIssuanceOfLongTermDebt_7DEBF21475CABB0CA71BB13416D42F61_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromIssuanceOfLongTermDebt_7DEBF21475CABB0CA71BB13416D42F61" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Borrowings on loan agreement </link:label>
<link:label id="lab_us-gaap_ProceedsFromIssuanceOfLongTermDebt_7DEBF21475CABB0CA71BB13416D42F61_label_en-US" xlink:label="lab_us-gaap_ProceedsFromIssuanceOfLongTermDebt_7DEBF21475CABB0CA71BB13416D42F61" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Proceeds from Issuance of Long-term Debt </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromIssuanceOfLongTermDebt" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_7DEBF21475CABB0CA71BB13416D42F61" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_7DEBF21475CABB0CA71BB13416D42F61" xlink:to="lab_us-gaap_ProceedsFromIssuanceOfLongTermDebt_7DEBF21475CABB0CA71BB13416D42F61" xlink:type="arc"/>
<link:label id="lab_us-gaap_RepaymentsOfLongTermDebt_4624BBF2E9A505F45FD6B13416D4C859_negatedLabel_en-US" xlink:label="lab_us-gaap_RepaymentsOfLongTermDebt_4624BBF2E9A505F45FD6B13416D4C859" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Repayments on loan agreement </link:label>
<link:label id="lab_us-gaap_RepaymentsOfLongTermDebt_4624BBF2E9A505F45FD6B13416D4C859_label_en-US" xlink:label="lab_us-gaap_RepaymentsOfLongTermDebt_4624BBF2E9A505F45FD6B13416D4C859" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Repayments of Long-term Debt </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RepaymentsOfLongTermDebt" xlink:label="loc_us-gaap_RepaymentsOfLongTermDebt_4624BBF2E9A505F45FD6B13416D4C859" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RepaymentsOfLongTermDebt_4624BBF2E9A505F45FD6B13416D4C859" xlink:to="lab_us-gaap_RepaymentsOfLongTermDebt_4624BBF2E9A505F45FD6B13416D4C859" xlink:type="arc"/>
<link:label id="lab_us-gaap_PaymentsOfDebtIssuanceCosts_E8BED5FF563656E25D61B13416D4543A_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsOfDebtIssuanceCosts_E8BED5FF563656E25D61B13416D4543A" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Payment of debt financing costs </link:label>
<link:label id="lab_us-gaap_PaymentsOfDebtIssuanceCosts_E8BED5FF563656E25D61B13416D4543A_label_en-US" xlink:label="lab_us-gaap_PaymentsOfDebtIssuanceCosts_E8BED5FF563656E25D61B13416D4543A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Payments of Debt Issuance Costs </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsOfDebtIssuanceCosts" xlink:label="loc_us-gaap_PaymentsOfDebtIssuanceCosts_E8BED5FF563656E25D61B13416D4543A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsOfDebtIssuanceCosts_E8BED5FF563656E25D61B13416D4543A" xlink:to="lab_us-gaap_PaymentsOfDebtIssuanceCosts_E8BED5FF563656E25D61B13416D4543A" xlink:type="arc"/>
<link:label id="lab_us-gaap_RepaymentsOfLongTermCapitalLeaseObligations_004AB568D31F6C4ED08BB13416D4DD5D_negatedLabel_en-US" xlink:label="lab_us-gaap_RepaymentsOfLongTermCapitalLeaseObligations_004AB568D31F6C4ED08BB13416D4DD5D" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Payments on financing lease obligations </link:label>
<link:label id="lab_us-gaap_RepaymentsOfLongTermCapitalLeaseObligations_004AB568D31F6C4ED08BB13416D4DD5D_label_en-US" xlink:label="lab_us-gaap_RepaymentsOfLongTermCapitalLeaseObligations_004AB568D31F6C4ED08BB13416D4DD5D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Repayments of Long-term Capital Lease Obligations </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RepaymentsOfLongTermCapitalLeaseObligations" xlink:label="loc_us-gaap_RepaymentsOfLongTermCapitalLeaseObligations_004AB568D31F6C4ED08BB13416D4DD5D" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RepaymentsOfLongTermCapitalLeaseObligations_004AB568D31F6C4ED08BB13416D4DD5D" xlink:to="lab_us-gaap_RepaymentsOfLongTermCapitalLeaseObligations_004AB568D31F6C4ED08BB13416D4DD5D" xlink:type="arc"/>
<link:label id="lab_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_43853555D132A3999CECB13416D585C5_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_43853555D132A3999CECB13416D585C5" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Payment of taxes for equity transactions </link:label>
<link:label id="lab_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_43853555D132A3999CECB13416D585C5_label_en-US" xlink:label="lab_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_43853555D132A3999CECB13416D585C5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Payment, Tax Withholding, Share-based Payment Arrangement </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation" xlink:label="loc_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_43853555D132A3999CECB13416D585C5" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_43853555D132A3999CECB13416D585C5" xlink:to="lab_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_43853555D132A3999CECB13416D585C5" xlink:type="arc"/>
<link:label id="lab_us-gaap_PaymentsOfDividendsCommonStock_051D709436188B11DC9CB13416D534D8_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsOfDividendsCommonStock_051D709436188B11DC9CB13416D534D8" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Dividends paid </link:label>
<link:label id="lab_us-gaap_PaymentsOfDividendsCommonStock_051D709436188B11DC9CB13416D534D8_label_en-US" xlink:label="lab_us-gaap_PaymentsOfDividendsCommonStock_051D709436188B11DC9CB13416D534D8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Payments of Ordinary Dividends, Common Stock </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsOfDividendsCommonStock" xlink:label="loc_us-gaap_PaymentsOfDividendsCommonStock_051D709436188B11DC9CB13416D534D8" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsOfDividendsCommonStock_051D709436188B11DC9CB13416D534D8" xlink:to="lab_us-gaap_PaymentsOfDividendsCommonStock_051D709436188B11DC9CB13416D534D8" xlink:type="arc"/>
<link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_C670FA26CD0625BDFB14B13416D50CE9_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_C670FA26CD0625BDFB14B13416D50CE9" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Net cash provided by (used in) financing activities </link:label>
<link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_C670FA26CD0625BDFB14B13416D50CE9_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_C670FA26CD0625BDFB14B13416D50CE9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Net Cash Provided by (Used in) Financing Activities </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_C670FA26CD0625BDFB14B13416D50CE9" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_C670FA26CD0625BDFB14B13416D50CE9" xlink:to="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_C670FA26CD0625BDFB14B13416D50CE9" xlink:type="arc"/>
<link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_3640BC13F0394DB3DBCFB13416D5358A_totalLabel_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_3640BC13F0394DB3DBCFB13416D5358A" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Net increase (decrease) in cash and cash equivalents </link:label>
<link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_3640BC13F0394DB3DBCFB13416D5358A_label_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_3640BC13F0394DB3DBCFB13416D5358A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_3640BC13F0394DB3DBCFB13416D5358A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_3640BC13F0394DB3DBCFB13416D5358A" xlink:to="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_3640BC13F0394DB3DBCFB13416D5358A" xlink:type="arc"/>
<link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_2A0400D52A4444141F82B13416D50D7A_periodStartLabel_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_2A0400D52A4444141F82B13416D50D7A" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US"> Cash and cash equivalents at beginning of year </link:label>
<link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_2A0400D52A4444141F82B13416D50D7A_label_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_2A0400D52A4444141F82B13416D50D7A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_2A0400D52A4444141F82B13416D50D7A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_2A0400D52A4444141F82B13416D50D7A" xlink:to="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_2A0400D52A4444141F82B13416D50D7A" xlink:type="arc"/>
<link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_E2106D3D853D0998256BB13416D578F3_periodEndLabel_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_E2106D3D853D0998256BB13416D578F3" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US"> Cash and cash equivalents at end of year </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_E2106D3D853D0998256BB13416D578F3" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_E2106D3D853D0998256BB13416D578F3" xlink:to="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_E2106D3D853D0998256BB13416D578F3" xlink:type="arc"/>
<link:label id="lab_us-gaap_SupplementalCashFlowInformationAbstract_F42E9C57E6FA69844B44B13416D6711F_terseLabel_en-US" xlink:label="lab_us-gaap_SupplementalCashFlowInformationAbstract_F42E9C57E6FA69844B44B13416D6711F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Supplemental cash flow disclosures: </link:label>
<link:label id="lab_us-gaap_SupplementalCashFlowInformationAbstract_F42E9C57E6FA69844B44B13416D6711F_label_en-US" xlink:label="lab_us-gaap_SupplementalCashFlowInformationAbstract_F42E9C57E6FA69844B44B13416D6711F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Supplemental Cash Flow Information [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SupplementalCashFlowInformationAbstract" xlink:label="loc_us-gaap_SupplementalCashFlowInformationAbstract_F42E9C57E6FA69844B44B13416D6711F" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SupplementalCashFlowInformationAbstract_F42E9C57E6FA69844B44B13416D6711F" xlink:to="lab_us-gaap_SupplementalCashFlowInformationAbstract_F42E9C57E6FA69844B44B13416D6711F" xlink:type="arc"/>
<link:label id="lab_vsec_CashPaidForAbstract_44EDF80CD94873E0DB05B13416D683F0_terseLabel_en-US" xlink:label="lab_vsec_CashPaidForAbstract_44EDF80CD94873E0DB05B13416D683F0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Cash paid for: </link:label>
<link:label id="lab_vsec_CashPaidForAbstract_44EDF80CD94873E0DB05B13416D683F0_label_en-US" xlink:label="lab_vsec_CashPaidForAbstract_44EDF80CD94873E0DB05B13416D683F0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Cash paid for: [Abstract] </link:label>
<link:label id="lab_vsec_CashPaidForAbstract_44EDF80CD94873E0DB05B13416D683F0_documentation_en-US" xlink:label="lab_vsec_CashPaidForAbstract_44EDF80CD94873E0DB05B13416D683F0" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"/>
<link:loc xlink:href="vsec-20191231.xsd#vsec_CashPaidForAbstract" xlink:label="loc_vsec_CashPaidForAbstract_44EDF80CD94873E0DB05B13416D683F0" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_vsec_CashPaidForAbstract_44EDF80CD94873E0DB05B13416D683F0" xlink:to="lab_vsec_CashPaidForAbstract_44EDF80CD94873E0DB05B13416D683F0" xlink:type="arc"/>
<link:label id="lab_us-gaap_InterestPaidNet_975D04F78040A082E35BB13416D6A578_terseLabel_en-US" xlink:label="lab_us-gaap_InterestPaidNet_975D04F78040A082E35BB13416D6A578" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Interest </link:label>
<link:label id="lab_us-gaap_InterestPaidNet_975D04F78040A082E35BB13416D6A578_label_en-US" xlink:label="lab_us-gaap_InterestPaidNet_975D04F78040A082E35BB13416D6A578" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Interest Paid, Excluding Capitalized Interest, Operating Activities </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestPaidNet" xlink:label="loc_us-gaap_InterestPaidNet_975D04F78040A082E35BB13416D6A578" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InterestPaidNet_975D04F78040A082E35BB13416D6A578" xlink:to="lab_us-gaap_InterestPaidNet_975D04F78040A082E35BB13416D6A578" xlink:type="arc"/>
<link:label id="lab_us-gaap_IncomeTaxesPaid_65F0F0FAC755F0A7F3BDB13416D65BC0_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxesPaid_65F0F0FAC755F0A7F3BDB13416D65BC0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Income taxes </link:label>
<link:label id="lab_us-gaap_IncomeTaxesPaid_65F0F0FAC755F0A7F3BDB13416D65BC0_label_en-US" xlink:label="lab_us-gaap_IncomeTaxesPaid_65F0F0FAC755F0A7F3BDB13416D65BC0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Income Taxes Paid </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeTaxesPaid" xlink:label="loc_us-gaap_IncomeTaxesPaid_65F0F0FAC755F0A7F3BDB13416D65BC0" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeTaxesPaid_65F0F0FAC755F0A7F3BDB13416D65BC0" xlink:to="lab_us-gaap_IncomeTaxesPaid_65F0F0FAC755F0A7F3BDB13416D65BC0" xlink:type="arc"/>
<link:label id="lab_us-gaap_OperatingCostsAndExpenses_BD1C65D6037B385D149EB103445770A4_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingCostsAndExpenses_BD1C65D6037B385D149EB103445770A4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Costs and operating expenses </link:label>
<link:label id="lab_us-gaap_OperatingCostsAndExpenses_BD1C65D6037B385D149EB103445770A4_label_en-US" xlink:label="lab_us-gaap_OperatingCostsAndExpenses_BD1C65D6037B385D149EB103445770A4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Costs and Expenses </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingCostsAndExpenses" xlink:label="loc_us-gaap_OperatingCostsAndExpenses_BD1C65D6037B385D149EB103445770A4" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingCostsAndExpenses_BD1C65D6037B385D149EB103445770A4" xlink:to="lab_us-gaap_OperatingCostsAndExpenses_BD1C65D6037B385D149EB103445770A4" xlink:type="arc"/>
<link:label id="lab_vsec_GainLossonSaleofContract_BAE2CCD555E6CA1697FDB1034457A66B_terseLabel_en-US" xlink:label="lab_vsec_GainLossonSaleofContract_BAE2CCD555E6CA1697FDB1034457A66B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Gain on sale of contract </link:label>
<link:loc xlink:href="vsec-20191231.xsd#vsec_GainLossonSaleofContract" xlink:label="loc_vsec_GainLossonSaleofContract_BAE2CCD555E6CA1697FDB1034457A66B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_vsec_GainLossonSaleofContract_BAE2CCD555E6CA1697FDB1034457A66B" xlink:to="lab_vsec_GainLossonSaleofContract_BAE2CCD555E6CA1697FDB1034457A66B" xlink:type="arc"/>
<link:label id="lab_us-gaap_EarningsPerShareBasicAbstract_4982D637C80B6EC55B07B10344586AA7_verboseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareBasicAbstract_4982D637C80B6EC55B07B10344586AA7" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Basic earnings per share: </link:label>
<link:label id="lab_us-gaap_EarningsPerShareBasicAbstract_4982D637C80B6EC55B07B10344586AA7_label_en-US" xlink:label="lab_us-gaap_EarningsPerShareBasicAbstract_4982D637C80B6EC55B07B10344586AA7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Earnings Per Share, Basic [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EarningsPerShareBasicAbstract" xlink:label="loc_us-gaap_EarningsPerShareBasicAbstract_4982D637C80B6EC55B07B10344586AA7" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EarningsPerShareBasicAbstract_4982D637C80B6EC55B07B10344586AA7" xlink:to="lab_us-gaap_EarningsPerShareBasicAbstract_4982D637C80B6EC55B07B10344586AA7" xlink:type="arc"/>
<link:label id="lab_us-gaap_EarningsPerShareBasic_5D3CEF817F984CC754B7B1034458D2D7_verboseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareBasic_5D3CEF817F984CC754B7B1034458D2D7" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Net income (in dollars per share) </link:label>
<link:label id="lab_us-gaap_EarningsPerShareBasic_5D3CEF817F984CC754B7B1034458D2D7_label_en-US" xlink:label="lab_us-gaap_EarningsPerShareBasic_5D3CEF817F984CC754B7B1034458D2D7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Earnings Per Share, Basic </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EarningsPerShareBasic" xlink:label="loc_us-gaap_EarningsPerShareBasic_5D3CEF817F984CC754B7B1034458D2D7" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EarningsPerShareBasic_5D3CEF817F984CC754B7B1034458D2D7" xlink:to="lab_us-gaap_EarningsPerShareBasic_5D3CEF817F984CC754B7B1034458D2D7" xlink:type="arc"/>
<link:label id="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_7C321A74B59303F43A9BB10344584400_terseLabel_en-US" xlink:label="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_7C321A74B59303F43A9BB10344584400" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Basic weighted average shares outstanding (in shares) </link:label>
<link:label id="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_7C321A74B59303F43A9BB10344584400_label_en-US" xlink:label="lab_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_7C321A74B59303F43A9BB10344584400" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Weighted Average Number of Shares Outstanding, Basic </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_7C321A74B59303F43A9BB10344584400" xlink:type="locator"/>
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<link:label id="lab_us-gaap_EarningsPerShareDilutedAbstract_357643D22669C2646A7CB1034458F406_verboseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareDilutedAbstract_357643D22669C2646A7CB1034458F406" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Diluted earnings per share: </link:label>
<link:label id="lab_us-gaap_EarningsPerShareDilutedAbstract_357643D22669C2646A7CB1034458F406_label_en-US" xlink:label="lab_us-gaap_EarningsPerShareDilutedAbstract_357643D22669C2646A7CB1034458F406" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Earnings Per Share, Diluted [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EarningsPerShareDilutedAbstract" xlink:label="loc_us-gaap_EarningsPerShareDilutedAbstract_357643D22669C2646A7CB1034458F406" xlink:type="locator"/>
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<link:label id="lab_us-gaap_EarningsPerShareDiluted_4728AE1C584910F54370B1034458A9A2_verboseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareDiluted_4728AE1C584910F54370B1034458A9A2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Net income (in dollars per share) </link:label>
<link:label id="lab_us-gaap_EarningsPerShareDiluted_4728AE1C584910F54370B1034458A9A2_label_en-US" xlink:label="lab_us-gaap_EarningsPerShareDiluted_4728AE1C584910F54370B1034458A9A2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Earnings Per Share, Diluted </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EarningsPerShareDiluted" xlink:label="loc_us-gaap_EarningsPerShareDiluted_4728AE1C584910F54370B1034458A9A2" xlink:type="locator"/>
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<link:label id="lab_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_4653B73E7864F5A7B301B1034459AA7C_terseLabel_en-US" xlink:label="lab_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_4653B73E7864F5A7B301B1034459AA7C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Diluted weighted average shares outstanding (in shares) </link:label>
<link:label id="lab_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_4653B73E7864F5A7B301B1034459AA7C_label_en-US" xlink:label="lab_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_4653B73E7864F5A7B301B1034459AA7C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Weighted Average Number of Shares Outstanding, Diluted </link:label>
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<link:label id="lab_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_BB1AA4A853F9FB71D5D04240E6CA52FC_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_BB1AA4A853F9FB71D5D04240E6CA52FC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Schedule of Revenues from External Customers and Long-Lived Assets [Table] </link:label>
<link:label id="lab_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_BB1AA4A853F9FB71D5D04240E6CA52FC_label_en-US" xlink:label="lab_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_BB1AA4A853F9FB71D5D04240E6CA52FC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Schedule of Revenues from External Customers and Long-Lived Assets [Table] </link:label>
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<link:label id="lab_srt_StatementGeographicalAxis_882DA12017C3143A5A4A4240E6CAACD7_terseLabel_en-US" xlink:label="lab_srt_StatementGeographicalAxis_882DA12017C3143A5A4A4240E6CAACD7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Geographical [Axis] </link:label>
<link:label id="lab_srt_StatementGeographicalAxis_882DA12017C3143A5A4A4240E6CAACD7_label_en-US" xlink:label="lab_srt_StatementGeographicalAxis_882DA12017C3143A5A4A4240E6CAACD7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Geographical [Axis] </link:label>
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<link:label id="lab_srt_SegmentGeographicalDomain_4DD57AFB3678ED06B4D64240E6CA892C_terseLabel_en-US" xlink:label="lab_srt_SegmentGeographicalDomain_4DD57AFB3678ED06B4D64240E6CA892C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Geographical [Domain] </link:label>
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<link:label id="lab_us-gaap_NonUsMember_129D02429F494D6939274240E6CABDF2_terseLabel_en-US" xlink:label="lab_us-gaap_NonUsMember_129D02429F494D6939274240E6CABDF2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other Countries </link:label>
<link:label id="lab_us-gaap_NonUsMember_129D02429F494D6939274240E6CABDF2_label_en-US" xlink:label="lab_us-gaap_NonUsMember_129D02429F494D6939274240E6CABDF2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Non-US [Member] </link:label>
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<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems" xlink:label="loc_us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems_00D3FC950EA0E5E480B64240E6CABEA2" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ShareBasedCompensationAbstract_1A251545D9A25DDF333442ED89CE839E_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationAbstract_1A251545D9A25DDF333442ED89CE839E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Payment Arrangement, Noncash Expense [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationAbstract" xlink:label="loc_us-gaap_ShareBasedCompensationAbstract_1A251545D9A25DDF333442ED89CE839E" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ReceivablesAbstract_09D42541794207AB73F742ED8A2C86E0_label_en-US" xlink:label="lab_us-gaap_ReceivablesAbstract_09D42541794207AB73F742ED8A2C86E0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Receivables [Abstract] </link:label>
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<link:label id="lab_vsec_ComponentsOfReceivablesAbstract_87833BB20220BC35EB3342ED8A2CE4E5_terseLabel_en-US" xlink:label="lab_vsec_ComponentsOfReceivablesAbstract_87833BB20220BC35EB3342ED8A2CE4E5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Components of Receivables [Abstract] </link:label>
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<link:label id="lab_us-gaap_AccountsReceivableNetCurrent_CACA2C31E7F4C6A4F15142ED8A2CB877_terseLabel_en-US" xlink:label="lab_us-gaap_AccountsReceivableNetCurrent_CACA2C31E7F4C6A4F15142ED8A2CB877" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Receivables, net </link:label>
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<link:label id="lab_us-gaap_AllowanceForDoubtfulAccountsReceivable_48A26B3D77FCFEE8C1D342ED8A2CE973_terseLabel_en-US" xlink:label="lab_us-gaap_AllowanceForDoubtfulAccountsReceivable_48A26B3D77FCFEE8C1D342ED8A2CE973" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Allowance for doubtful accounts </link:label>
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<link:label id="lab_us-gaap_PropertyPlantAndEquipmentTypeDomain_281C8FBEC548D118B3A2ED940C4BD274_terseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentTypeDomain_281C8FBEC548D118B3A2ED940C4BD274" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Property, Plant and Equipment, Type [Domain] </link:label>
<link:label id="lab_us-gaap_PropertyPlantAndEquipmentTypeDomain_281C8FBEC548D118B3A2ED940C4BD274_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentTypeDomain_281C8FBEC548D118B3A2ED940C4BD274" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Property, Plant and Equipment, Type [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_281C8FBEC548D118B3A2ED940C4BD274" xlink:type="locator"/>
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<link:label id="lab_us-gaap_BuildingAndBuildingImprovementsMember_8A7C88E677932D54F44BED940C4B8332_terseLabel_en-US" xlink:label="lab_us-gaap_BuildingAndBuildingImprovementsMember_8A7C88E677932D54F44BED940C4B8332" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Buildings and building improvements </link:label>
<link:label id="lab_us-gaap_BuildingAndBuildingImprovementsMember_8A7C88E677932D54F44BED940C4B8332_label_en-US" xlink:label="lab_us-gaap_BuildingAndBuildingImprovementsMember_8A7C88E677932D54F44BED940C4B8332" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Building and Building Improvements [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BuildingAndBuildingImprovementsMember" xlink:label="loc_us-gaap_BuildingAndBuildingImprovementsMember_8A7C88E677932D54F44BED940C4B8332" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BuildingAndBuildingImprovementsMember_8A7C88E677932D54F44BED940C4B8332" xlink:to="lab_us-gaap_BuildingAndBuildingImprovementsMember_8A7C88E677932D54F44BED940C4B8332" xlink:type="arc"/>
<link:label id="lab_us-gaap_ComputerEquipmentMember_FBF4637DD3314723B82CED940C4B2881_terseLabel_en-US" xlink:label="lab_us-gaap_ComputerEquipmentMember_FBF4637DD3314723B82CED940C4B2881" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Computer equipment </link:label>
<link:label id="lab_us-gaap_ComputerEquipmentMember_FBF4637DD3314723B82CED940C4B2881_label_en-US" xlink:label="lab_us-gaap_ComputerEquipmentMember_FBF4637DD3314723B82CED940C4B2881" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Computer Equipment [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ComputerEquipmentMember" xlink:label="loc_us-gaap_ComputerEquipmentMember_FBF4637DD3314723B82CED940C4B2881" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ComputerEquipmentMember_FBF4637DD3314723B82CED940C4B2881" xlink:to="lab_us-gaap_ComputerEquipmentMember_FBF4637DD3314723B82CED940C4B2881" xlink:type="arc"/>
<link:label id="lab_us-gaap_FurnitureAndFixturesMember_933FDC780180A812C4F5ED940C4CA245_verboseLabel_en-US" xlink:label="lab_us-gaap_FurnitureAndFixturesMember_933FDC780180A812C4F5ED940C4CA245" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Furniture, fixtures, equipment and other </link:label>
<link:label id="lab_us-gaap_FurnitureAndFixturesMember_933FDC780180A812C4F5ED940C4CA245_label_en-US" xlink:label="lab_us-gaap_FurnitureAndFixturesMember_933FDC780180A812C4F5ED940C4CA245" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Furniture and Fixtures [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FurnitureAndFixturesMember" xlink:label="loc_us-gaap_FurnitureAndFixturesMember_933FDC780180A812C4F5ED940C4CA245" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FurnitureAndFixturesMember_933FDC780180A812C4F5ED940C4CA245" xlink:to="lab_us-gaap_FurnitureAndFixturesMember_933FDC780180A812C4F5ED940C4CA245" xlink:type="arc"/>
<link:label id="lab_us-gaap_LeaseholdImprovementsMember_417943D2B4E24EAF524BED940C4C7BB8_terseLabel_en-US" xlink:label="lab_us-gaap_LeaseholdImprovementsMember_417943D2B4E24EAF524BED940C4C7BB8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Leasehold improvements </link:label>
<link:label id="lab_us-gaap_LeaseholdImprovementsMember_417943D2B4E24EAF524BED940C4C7BB8_label_en-US" xlink:label="lab_us-gaap_LeaseholdImprovementsMember_417943D2B4E24EAF524BED940C4C7BB8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Leasehold Improvements [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LeaseholdImprovementsMember" xlink:label="loc_us-gaap_LeaseholdImprovementsMember_417943D2B4E24EAF524BED940C4C7BB8" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LeaseholdImprovementsMember_417943D2B4E24EAF524BED940C4C7BB8" xlink:to="lab_us-gaap_LeaseholdImprovementsMember_417943D2B4E24EAF524BED940C4C7BB8" xlink:type="arc"/>
<link:label id="lab_us-gaap_LandAndLandImprovementsMember_C06DE89D05129244D497ED940C4C2D37_terseLabel_en-US" xlink:label="lab_us-gaap_LandAndLandImprovementsMember_C06DE89D05129244D497ED940C4C2D37" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Land and land improvements </link:label>
<link:label id="lab_us-gaap_LandAndLandImprovementsMember_C06DE89D05129244D497ED940C4C2D37_label_en-US" xlink:label="lab_us-gaap_LandAndLandImprovementsMember_C06DE89D05129244D497ED940C4C2D37" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Land and Land Improvements [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LandAndLandImprovementsMember" xlink:label="loc_us-gaap_LandAndLandImprovementsMember_C06DE89D05129244D497ED940C4C2D37" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LandAndLandImprovementsMember_C06DE89D05129244D497ED940C4C2D37" xlink:to="lab_us-gaap_LandAndLandImprovementsMember_C06DE89D05129244D497ED940C4C2D37" xlink:type="arc"/>
<link:label id="lab_us-gaap_PropertyPlantAndEquipmentLineItems_D60E809E1EDBA705432EED940C4CA161_terseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentLineItems_D60E809E1EDBA705432EED940C4CA161" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Property, Plant and Equipment [Line Items] </link:label>
<link:label id="lab_us-gaap_PropertyPlantAndEquipmentLineItems_D60E809E1EDBA705432EED940C4CA161_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentLineItems_D60E809E1EDBA705432EED940C4CA161" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Property, Plant and Equipment [Line Items] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentLineItems" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_D60E809E1EDBA705432EED940C4CA161" xlink:type="locator"/>
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<link:label id="lab_us-gaap_PropertyPlantAndEquipmentGross_4C6911F614DA7A1C64F1ED940C4CA574_terseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentGross_4C6911F614DA7A1C64F1ED940C4CA574" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Property and equipment, gross </link:label>
<link:label id="lab_us-gaap_PropertyPlantAndEquipmentGross_4C6911F614DA7A1C64F1ED940C4CA574_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentGross_4C6911F614DA7A1C64F1ED940C4CA574" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Property, Plant and Equipment, Gross </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentGross" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_4C6911F614DA7A1C64F1ED940C4CA574" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentGross_4C6911F614DA7A1C64F1ED940C4CA574" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentGross_4C6911F614DA7A1C64F1ED940C4CA574" xlink:type="arc"/>
<link:label id="lab_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_A5EA2FFDDD417EA84961ED940C4DFE3B_negatedLabel_en-US" xlink:label="lab_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_A5EA2FFDDD417EA84961ED940C4DFE3B" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Less accumulated depreciation and amortization </link:label>
<link:label id="lab_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_A5EA2FFDDD417EA84961ED940C4DFE3B_label_en-US" xlink:label="lab_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_A5EA2FFDDD417EA84961ED940C4DFE3B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_A5EA2FFDDD417EA84961ED940C4DFE3B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_A5EA2FFDDD417EA84961ED940C4DFE3B" xlink:to="lab_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_A5EA2FFDDD417EA84961ED940C4DFE3B" xlink:type="arc"/>
<link:label id="lab_us-gaap_PropertyPlantAndEquipmentNet_9D750F8E953755D059D8ED940C4DC81E_totalLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentNet_9D750F8E953755D059D8ED940C4DC81E" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total property and equipment, net </link:label>
<link:label id="lab_us-gaap_PropertyPlantAndEquipmentNet_9D750F8E953755D059D8ED940C4DC81E_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentNet_9D750F8E953755D059D8ED940C4DC81E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Property, Plant and Equipment, Net </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_9D750F8E953755D059D8ED940C4DC81E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNet_9D750F8E953755D059D8ED940C4DC81E" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentNet_9D750F8E953755D059D8ED940C4DC81E" xlink:type="arc"/>
<link:label id="lab_us-gaap_Depreciation_5967A354A0D2EED30760ED940C4DD011_terseLabel_en-US" xlink:label="lab_us-gaap_Depreciation_5967A354A0D2EED30760ED940C4DD011" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Depreciation and amortization </link:label>
<link:label id="lab_us-gaap_Depreciation_5967A354A0D2EED30760ED940C4DD011_label_en-US" xlink:label="lab_us-gaap_Depreciation_5967A354A0D2EED30760ED940C4DD011" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Depreciation </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Depreciation" xlink:label="loc_us-gaap_Depreciation_5967A354A0D2EED30760ED940C4DD011" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Depreciation_5967A354A0D2EED30760ED940C4DD011" xlink:to="lab_us-gaap_Depreciation_5967A354A0D2EED30760ED940C4DD011" xlink:type="arc"/>
<link:label id="lab_us-gaap_OtherCapitalizedPropertyPlantAndEquipmentMember_6FCC5AFA60921587039EAB1D32DD698F_terseLabel_en-US" xlink:label="lab_us-gaap_OtherCapitalizedPropertyPlantAndEquipmentMember_6FCC5AFA60921587039EAB1D32DD698F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other Capitalized Property Plant and Equipment </link:label>
<link:label id="lab_us-gaap_OtherCapitalizedPropertyPlantAndEquipmentMember_6FCC5AFA60921587039EAB1D32DD698F_label_en-US" xlink:label="lab_us-gaap_OtherCapitalizedPropertyPlantAndEquipmentMember_6FCC5AFA60921587039EAB1D32DD698F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Capitalized Property Plant and Equipment [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherCapitalizedPropertyPlantAndEquipmentMember" xlink:label="loc_us-gaap_OtherCapitalizedPropertyPlantAndEquipmentMember_6FCC5AFA60921587039EAB1D32DD698F" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherCapitalizedPropertyPlantAndEquipmentMember_6FCC5AFA60921587039EAB1D32DD698F" xlink:to="lab_us-gaap_OtherCapitalizedPropertyPlantAndEquipmentMember_6FCC5AFA60921587039EAB1D32DD698F" xlink:type="arc"/>
<link:label id="lab_us-gaap_LandBuildingsAndImprovementsMember_2E92B7D4523E26E2DDE1AB1D32DDD626_terseLabel_en-US" xlink:label="lab_us-gaap_LandBuildingsAndImprovementsMember_2E92B7D4523E26E2DDE1AB1D32DDD626" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Land, Buildings and Improvements </link:label>
<link:label id="lab_us-gaap_LandBuildingsAndImprovementsMember_2E92B7D4523E26E2DDE1AB1D32DDD626_label_en-US" xlink:label="lab_us-gaap_LandBuildingsAndImprovementsMember_2E92B7D4523E26E2DDE1AB1D32DDD626" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Land, Buildings and Improvements [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LandBuildingsAndImprovementsMember" xlink:label="loc_us-gaap_LandBuildingsAndImprovementsMember_2E92B7D4523E26E2DDE1AB1D32DDD626" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LandBuildingsAndImprovementsMember_2E92B7D4523E26E2DDE1AB1D32DDD626" xlink:to="lab_us-gaap_LandBuildingsAndImprovementsMember_2E92B7D4523E26E2DDE1AB1D32DDD626" xlink:type="arc"/>
<link:label id="lab_us-gaap_ServicingContractsMember_3AB1F409A9EBECB547D2AB1D32DE5ED5_terseLabel_en-US" xlink:label="lab_us-gaap_ServicingContractsMember_3AB1F409A9EBECB547D2AB1D32DE5ED5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Servicing Contracts </link:label>
<link:label id="lab_us-gaap_ServicingContractsMember_3AB1F409A9EBECB547D2AB1D32DE5ED5_label_en-US" xlink:label="lab_us-gaap_ServicingContractsMember_3AB1F409A9EBECB547D2AB1D32DE5ED5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Servicing Contracts [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ServicingContractsMember" xlink:label="loc_us-gaap_ServicingContractsMember_3AB1F409A9EBECB547D2AB1D32DE5ED5" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ServicingContractsMember_3AB1F409A9EBECB547D2AB1D32DE5ED5" xlink:to="lab_us-gaap_ServicingContractsMember_3AB1F409A9EBECB547D2AB1D32DE5ED5" xlink:type="arc"/>
<link:label id="lab_us-gaap_PatentedTechnologyMember_1FD20A56024D8CED13F6AB1D32DE25F6_terseLabel_en-US" xlink:label="lab_us-gaap_PatentedTechnologyMember_1FD20A56024D8CED13F6AB1D32DE25F6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Acquired Technologies </link:label>
<link:label id="lab_us-gaap_PatentedTechnologyMember_1FD20A56024D8CED13F6AB1D32DE25F6_label_en-US" xlink:label="lab_us-gaap_PatentedTechnologyMember_1FD20A56024D8CED13F6AB1D32DE25F6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Patented Technology [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PatentedTechnologyMember" xlink:label="loc_us-gaap_PatentedTechnologyMember_1FD20A56024D8CED13F6AB1D32DE25F6" xlink:type="locator"/>
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<link:label id="lab_srt_RangeAxis_5F7ED0D05584F8342D92AB1D32DE5283_terseLabel_en-US" xlink:label="lab_srt_RangeAxis_5F7ED0D05584F8342D92AB1D32DE5283" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Statistical Measurement [Axis] </link:label>
<link:label id="lab_srt_RangeAxis_5F7ED0D05584F8342D92AB1D32DE5283_label_en-US" xlink:label="lab_srt_RangeAxis_5F7ED0D05584F8342D92AB1D32DE5283" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Statistical Measurement [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeAxis" xlink:label="loc_srt_RangeAxis_5F7ED0D05584F8342D92AB1D32DE5283" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_RangeAxis_5F7ED0D05584F8342D92AB1D32DE5283" xlink:to="lab_srt_RangeAxis_5F7ED0D05584F8342D92AB1D32DE5283" xlink:type="arc"/>
<link:label id="lab_srt_RangeMember_2DB692436AAF2F50E51FAB1D32DEA526_terseLabel_en-US" xlink:label="lab_srt_RangeMember_2DB692436AAF2F50E51FAB1D32DEA526" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Statistical Measurement [Domain] </link:label>
<link:label id="lab_srt_RangeMember_2DB692436AAF2F50E51FAB1D32DEA526_label_en-US" xlink:label="lab_srt_RangeMember_2DB692436AAF2F50E51FAB1D32DEA526" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Statistical Measurement [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeMember" xlink:label="loc_srt_RangeMember_2DB692436AAF2F50E51FAB1D32DEA526" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_RangeMember_2DB692436AAF2F50E51FAB1D32DEA526" xlink:to="lab_srt_RangeMember_2DB692436AAF2F50E51FAB1D32DEA526" xlink:type="arc"/>
<link:label id="lab_srt_MinimumMember_2B4F26C35E28E62A2641AB1D32DF6359_terseLabel_en-US" xlink:label="lab_srt_MinimumMember_2B4F26C35E28E62A2641AB1D32DF6359" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Minimum </link:label>
<link:label id="lab_srt_MinimumMember_2B4F26C35E28E62A2641AB1D32DF6359_label_en-US" xlink:label="lab_srt_MinimumMember_2B4F26C35E28E62A2641AB1D32DF6359" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Minimum [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_MinimumMember" xlink:label="loc_srt_MinimumMember_2B4F26C35E28E62A2641AB1D32DF6359" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_MinimumMember_2B4F26C35E28E62A2641AB1D32DF6359" xlink:to="lab_srt_MinimumMember_2B4F26C35E28E62A2641AB1D32DF6359" xlink:type="arc"/>
<link:label id="lab_srt_MaximumMember_82FFBB20F7943FC6A7EFAB1D32DF36BF_terseLabel_en-US" xlink:label="lab_srt_MaximumMember_82FFBB20F7943FC6A7EFAB1D32DF36BF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Maximum </link:label>
<link:label id="lab_srt_MaximumMember_82FFBB20F7943FC6A7EFAB1D32DF36BF_label_en-US" xlink:label="lab_srt_MaximumMember_82FFBB20F7943FC6A7EFAB1D32DF36BF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Maximum [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_MaximumMember" xlink:label="loc_srt_MaximumMember_82FFBB20F7943FC6A7EFAB1D32DF36BF" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_MaximumMember_82FFBB20F7943FC6A7EFAB1D32DF36BF" xlink:to="lab_srt_MaximumMember_82FFBB20F7943FC6A7EFAB1D32DF36BF" xlink:type="arc"/>
<link:label id="lab_us-gaap_Liabilities_1BDCD6FB3CA81E44FCF6AB1D32DFCFA3_terseLabel_en-US" xlink:label="lab_us-gaap_Liabilities_1BDCD6FB3CA81E44FCF6AB1D32DFCFA3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Liabilities </link:label>
<link:label id="lab_us-gaap_Liabilities_1BDCD6FB3CA81E44FCF6AB1D32DFCFA3_label_en-US" xlink:label="lab_us-gaap_Liabilities_1BDCD6FB3CA81E44FCF6AB1D32DFCFA3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Liabilities </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Liabilities" xlink:label="loc_us-gaap_Liabilities_1BDCD6FB3CA81E44FCF6AB1D32DFCFA3" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Liabilities_1BDCD6FB3CA81E44FCF6AB1D32DFCFA3" xlink:to="lab_us-gaap_Liabilities_1BDCD6FB3CA81E44FCF6AB1D32DFCFA3" xlink:type="arc"/>
<link:label id="lab_us-gaap_Assets_F8A83ED267937E7DA096AB1D32E06056_terseLabel_en-US" xlink:label="lab_us-gaap_Assets_F8A83ED267937E7DA096AB1D32E06056" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Assets </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Assets" xlink:label="loc_us-gaap_Assets_F8A83ED267937E7DA096AB1D32E06056" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Assets_F8A83ED267937E7DA096AB1D32E06056" xlink:to="lab_us-gaap_Assets_F8A83ED267937E7DA096AB1D32E06056" xlink:type="arc"/>
<link:label id="lab_us-gaap_OperatingLeaseRightOfUseAsset_A8F74AC9D870B010EBCDAB1D32E02AD0_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeaseRightOfUseAsset_A8F74AC9D870B010EBCDAB1D32E02AD0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Operating lease - right-of-use asset </link:label>
<link:label id="lab_us-gaap_OperatingLeaseRightOfUseAsset_A8F74AC9D870B010EBCDAB1D32E02AD0_label_en-US" xlink:label="lab_us-gaap_OperatingLeaseRightOfUseAsset_A8F74AC9D870B010EBCDAB1D32E02AD0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Lease, Right-of-Use Asset </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeaseRightOfUseAsset" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_A8F74AC9D870B010EBCDAB1D32E02AD0" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeaseRightOfUseAsset_A8F74AC9D870B010EBCDAB1D32E02AD0" xlink:to="lab_us-gaap_OperatingLeaseRightOfUseAsset_A8F74AC9D870B010EBCDAB1D32E02AD0" xlink:type="arc"/>
<link:label id="lab_us-gaap_FinanceLeaseRightOfUseAsset_19A8112193E819B99F0FAB1D32E0E60B_terseLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseRightOfUseAsset_19A8112193E819B99F0FAB1D32E0E60B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Finance lease, right-of-use asset </link:label>
<link:label id="lab_us-gaap_FinanceLeaseRightOfUseAsset_19A8112193E819B99F0FAB1D32E0E60B_label_en-US" xlink:label="lab_us-gaap_FinanceLeaseRightOfUseAsset_19A8112193E819B99F0FAB1D32E0E60B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Finance Lease, Right-of-Use Asset </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinanceLeaseRightOfUseAsset" xlink:label="loc_us-gaap_FinanceLeaseRightOfUseAsset_19A8112193E819B99F0FAB1D32E0E60B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinanceLeaseRightOfUseAsset_19A8112193E819B99F0FAB1D32E0E60B" xlink:to="lab_us-gaap_FinanceLeaseRightOfUseAsset_19A8112193E819B99F0FAB1D32E0E60B" xlink:type="arc"/>
<link:label id="lab_us-gaap_OperatingLeaseLiability_A08107BA4319A2CA40E8AB1D32E06B81_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeaseLiability_A08107BA4319A2CA40E8AB1D32E06B81" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Operating lease, liability </link:label>
<link:label id="lab_us-gaap_OperatingLeaseLiability_A08107BA4319A2CA40E8AB1D32E06B81_label_en-US" xlink:label="lab_us-gaap_OperatingLeaseLiability_A08107BA4319A2CA40E8AB1D32E06B81" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Lease, Liability </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeaseLiability" xlink:label="loc_us-gaap_OperatingLeaseLiability_A08107BA4319A2CA40E8AB1D32E06B81" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeaseLiability_A08107BA4319A2CA40E8AB1D32E06B81" xlink:to="lab_us-gaap_OperatingLeaseLiability_A08107BA4319A2CA40E8AB1D32E06B81" xlink:type="arc"/>
<link:label id="lab_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_686C610F892292091F5AAB1D32E02DD5_terseLabel_en-US" xlink:label="lab_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_686C610F892292091F5AAB1D32E02DD5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Acquired intangible assets, weighted average useful life </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife" xlink:label="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_686C610F892292091F5AAB1D32E02DD5" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_686C610F892292091F5AAB1D32E02DD5" xlink:to="lab_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_686C610F892292091F5AAB1D32E02DD5" xlink:type="arc"/>
<link:label id="lab_vsec_NumberOfTradeNames_62B92521324B92D7A94FAB1D32E03458_terseLabel_en-US" xlink:label="lab_vsec_NumberOfTradeNames_62B92521324B92D7A94FAB1D32E03458" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Number of trade names </link:label>
<link:label id="lab_vsec_NumberOfTradeNames_62B92521324B92D7A94FAB1D32E03458_label_en-US" xlink:label="lab_vsec_NumberOfTradeNames_62B92521324B92D7A94FAB1D32E03458" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Number of Trade Names </link:label>
<link:label id="lab_vsec_NumberOfTradeNames_62B92521324B92D7A94FAB1D32E03458_documentation_en-US" xlink:label="lab_vsec_NumberOfTradeNames_62B92521324B92D7A94FAB1D32E03458" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Number of amortized trade name with the entity. </link:label>
<link:loc xlink:href="vsec-20191231.xsd#vsec_NumberOfTradeNames" xlink:label="loc_vsec_NumberOfTradeNames_62B92521324B92D7A94FAB1D32E03458" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_vsec_NumberOfTradeNames_62B92521324B92D7A94FAB1D32E03458" xlink:to="lab_vsec_NumberOfTradeNames_62B92521324B92D7A94FAB1D32E03458" xlink:type="arc"/>
<link:label id="lab_us-gaap_PropertyPlantAndEquipmentUsefulLife_E842982285AABE07A2ABAB1D32E1BD5A_verboseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentUsefulLife_E842982285AABE07A2ABAB1D32E1BD5A" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Property, plant and equipment, useful life </link:label>
<link:label id="lab_us-gaap_PropertyPlantAndEquipmentUsefulLife_E842982285AABE07A2ABAB1D32E1BD5A_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentUsefulLife_E842982285AABE07A2ABAB1D32E1BD5A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Property, Plant and Equipment, Useful Life </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentUsefulLife" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentUsefulLife_E842982285AABE07A2ABAB1D32E1BD5A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentUsefulLife_E842982285AABE07A2ABAB1D32E1BD5A" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentUsefulLife_E842982285AABE07A2ABAB1D32E1BD5A" xlink:type="arc"/>
<link:label id="lab_vsec_PercentageOfContractsWithGovernment_E84D525F472E194D1CE5AB1D32E1F01A_terseLabel_en-US" xlink:label="lab_vsec_PercentageOfContractsWithGovernment_E84D525F472E194D1CE5AB1D32E1F01A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Percentage of contracts with the government </link:label>
<link:label id="lab_vsec_PercentageOfContractsWithGovernment_E84D525F472E194D1CE5AB1D32E1F01A_label_en-US" xlink:label="lab_vsec_PercentageOfContractsWithGovernment_E84D525F472E194D1CE5AB1D32E1F01A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Percentage of Contracts with the Government </link:label>
<link:label id="lab_vsec_PercentageOfContractsWithGovernment_E84D525F472E194D1CE5AB1D32E1F01A_documentation_en-US" xlink:label="lab_vsec_PercentageOfContractsWithGovernment_E84D525F472E194D1CE5AB1D32E1F01A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Represents the ratio of contracts with the government revenue to total revenue during the period ended. </link:label>
<link:loc xlink:href="vsec-20191231.xsd#vsec_PercentageOfContractsWithGovernment" xlink:label="loc_vsec_PercentageOfContractsWithGovernment_E84D525F472E194D1CE5AB1D32E1F01A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_vsec_PercentageOfContractsWithGovernment_E84D525F472E194D1CE5AB1D32E1F01A" xlink:to="lab_vsec_PercentageOfContractsWithGovernment_E84D525F472E194D1CE5AB1D32E1F01A" xlink:type="arc"/>
<link:label id="lab_vsec_RevenuefromContractswithCustomerNumberofContracts_0F27233D519BEF0E6A19AB1D32E1B46F_terseLabel_en-US" xlink:label="lab_vsec_RevenuefromContractswithCustomerNumberofContracts_0F27233D519BEF0E6A19AB1D32E1B46F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Number of contract types </link:label>
<link:label id="lab_vsec_RevenuefromContractswithCustomerNumberofContracts_0F27233D519BEF0E6A19AB1D32E1B46F_label_en-US" xlink:label="lab_vsec_RevenuefromContractswithCustomerNumberofContracts_0F27233D519BEF0E6A19AB1D32E1B46F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Revenue from Contracts with Customer, Number of Contracts </link:label>
<link:label id="lab_vsec_RevenuefromContractswithCustomerNumberofContracts_0F27233D519BEF0E6A19AB1D32E1B46F_documentation_en-US" xlink:label="lab_vsec_RevenuefromContractswithCustomerNumberofContracts_0F27233D519BEF0E6A19AB1D32E1B46F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Revenue from Contracts with Customer, Number of Contracts </link:label>
<link:loc xlink:href="vsec-20191231.xsd#vsec_RevenuefromContractswithCustomerNumberofContracts" xlink:label="loc_vsec_RevenuefromContractswithCustomerNumberofContracts_0F27233D519BEF0E6A19AB1D32E1B46F" xlink:type="locator"/>
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<link:label id="lab_us-gaap_DeferredCompensationArrangementWithIndividualAllocatedShareBasedCompensationExpense_6A2E0D5FC5F0F26782C0AB1D32E17B02_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredCompensationArrangementWithIndividualAllocatedShareBasedCompensationExpense_6A2E0D5FC5F0F26782C0AB1D32E17B02" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Deferred compensation plan expense </link:label>
<link:label id="lab_us-gaap_DeferredCompensationArrangementWithIndividualAllocatedShareBasedCompensationExpense_6A2E0D5FC5F0F26782C0AB1D32E17B02_label_en-US" xlink:label="lab_us-gaap_DeferredCompensationArrangementWithIndividualAllocatedShareBasedCompensationExpense_6A2E0D5FC5F0F26782C0AB1D32E17B02" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Deferred Compensation Arrangement with Individual, Allocated Share-based Compensation Expense </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredCompensationArrangementWithIndividualAllocatedShareBasedCompensationExpense" xlink:label="loc_us-gaap_DeferredCompensationArrangementWithIndividualAllocatedShareBasedCompensationExpense_6A2E0D5FC5F0F26782C0AB1D32E17B02" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill_D93C0CD2D4B328DBEAB0AB1D32E116E7_terseLabel_en-US" xlink:label="lab_us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill_D93C0CD2D4B328DBEAB0AB1D32E116E7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Impairment of intangible assets </link:label>
<link:label id="lab_us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill_D93C0CD2D4B328DBEAB0AB1D32E116E7_label_en-US" xlink:label="lab_us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill_D93C0CD2D4B328DBEAB0AB1D32E116E7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill) </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill" xlink:label="loc_us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill_D93C0CD2D4B328DBEAB0AB1D32E116E7" xlink:type="locator"/>
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<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetUsefulLife_E61E35F0A0F76F880769AB1D32E1DA73_verboseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetUsefulLife_E61E35F0A0F76F880769AB1D32E1DA73" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Finite-lived intangible asset, useful life </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetUsefulLife" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetUsefulLife_E61E35F0A0F76F880769AB1D32E1DA73" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetUsefulLife_E61E35F0A0F76F880769AB1D32E1DA73" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetUsefulLife_E61E35F0A0F76F880769AB1D32E1DA73" xlink:type="arc"/>
<link:label id="lab_us-gaap_RevenueFromContractWithCustomerTextBlock_8DF272CD50A107EE1343ED940CAFCD56_terseLabel_en-US" xlink:label="lab_us-gaap_RevenueFromContractWithCustomerTextBlock_8DF272CD50A107EE1343ED940CAFCD56" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Revenue Recognition </link:label>
<link:label id="lab_us-gaap_RevenueFromContractWithCustomerTextBlock_8DF272CD50A107EE1343ED940CAFCD56_label_en-US" xlink:label="lab_us-gaap_RevenueFromContractWithCustomerTextBlock_8DF272CD50A107EE1343ED940CAFCD56" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Revenue from Contract with Customer [Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevenueFromContractWithCustomerTextBlock" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerTextBlock_8DF272CD50A107EE1343ED940CAFCD56" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RevenueFromContractWithCustomerTextBlock_8DF272CD50A107EE1343ED940CAFCD56" xlink:to="lab_us-gaap_RevenueFromContractWithCustomerTextBlock_8DF272CD50A107EE1343ED940CAFCD56" xlink:type="arc"/>
<link:label id="lab_vsec_IncomeTaxExpenseBenefitonInterestRateSwap_B69B224719740D19AADEA5FB909049EB_terseLabel_en-US" xlink:label="lab_vsec_IncomeTaxExpenseBenefitonInterestRateSwap_B69B224719740D19AADEA5FB909049EB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Income tax expense benefit on interest rate swap </link:label>
<link:label id="lab_vsec_IncomeTaxExpenseBenefitonInterestRateSwap_B69B224719740D19AADEA5FB909049EB_label_en-US" xlink:label="lab_vsec_IncomeTaxExpenseBenefitonInterestRateSwap_B69B224719740D19AADEA5FB909049EB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Income Tax Expense (Benefit) on Interest Rate Swap </link:label>
<link:label id="lab_vsec_IncomeTaxExpenseBenefitonInterestRateSwap_B69B224719740D19AADEA5FB909049EB_documentation_en-US" xlink:label="lab_vsec_IncomeTaxExpenseBenefitonInterestRateSwap_B69B224719740D19AADEA5FB909049EB" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Refers to income tax expense benefit on interest rate swap agreements. </link:label>
<link:loc xlink:href="vsec-20191231.xsd#vsec_IncomeTaxExpenseBenefitonInterestRateSwap" xlink:label="loc_vsec_IncomeTaxExpenseBenefitonInterestRateSwap_B69B224719740D19AADEA5FB909049EB" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_vsec_IncomeTaxExpenseBenefitonInterestRateSwap_B69B224719740D19AADEA5FB909049EB" xlink:to="lab_vsec_IncomeTaxExpenseBenefitonInterestRateSwap_B69B224719740D19AADEA5FB909049EB" xlink:type="arc"/>
<link:label id="lab_vsec_CurrentPortionOfEarnOutObligationFairValueDisclosure_FAFD65ACD96C41F6FE2BA5FB909062FA_terseLabel_en-US" xlink:label="lab_vsec_CurrentPortionOfEarnOutObligationFairValueDisclosure_FAFD65ACD96C41F6FE2BA5FB909062FA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Current portion of earn-out obligations </link:label>
<link:loc xlink:href="vsec-20191231.xsd#vsec_CurrentPortionOfEarnOutObligationFairValueDisclosure" xlink:label="loc_vsec_CurrentPortionOfEarnOutObligationFairValueDisclosure_FAFD65ACD96C41F6FE2BA5FB909062FA" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_vsec_CurrentPortionOfEarnOutObligationFairValueDisclosure_FAFD65ACD96C41F6FE2BA5FB909062FA" xlink:to="lab_vsec_CurrentPortionOfEarnOutObligationFairValueDisclosure_FAFD65ACD96C41F6FE2BA5FB909062FA" xlink:type="arc"/>
<link:label id="lab_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_712F8579A07FE7AE8053ED940B829420_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_712F8579A07FE7AE8053ED940B829420" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Increase (Decrease) in Stockholders' Equity [Roll Forward] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_712F8579A07FE7AE8053ED940B829420" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_712F8579A07FE7AE8053ED940B829420" xlink:to="lab_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_712F8579A07FE7AE8053ED940B829420" xlink:type="arc"/>
<link:label id="lab_us-gaap_CommonStockDividendsPerShareDeclared_4AE820CD68023EB96707ED940B83E609_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockDividendsPerShareDeclared_4AE820CD68023EB96707ED940B83E609" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Dividends declared per share (in dollars per share) </link:label>
<link:label id="lab_us-gaap_CommonStockDividendsPerShareDeclared_4AE820CD68023EB96707ED940B83E609_label_en-US" xlink:label="lab_us-gaap_CommonStockDividendsPerShareDeclared_4AE820CD68023EB96707ED940B83E609" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Common Stock, Dividends, Per Share, Declared </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockDividendsPerShareDeclared" xlink:label="loc_us-gaap_CommonStockDividendsPerShareDeclared_4AE820CD68023EB96707ED940B83E609" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockDividendsPerShareDeclared_4AE820CD68023EB96707ED940B83E609" xlink:to="lab_us-gaap_CommonStockDividendsPerShareDeclared_4AE820CD68023EB96707ED940B83E609" xlink:type="arc"/>
<link:label id="lab_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTextBlock_231FE1EBAE9E7A9FC30DAB2A20763090_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTextBlock_231FE1EBAE9E7A9FC30DAB2A20763090" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Schedule of Business Acquisitions, by Acquisition </link:label>
<link:label id="lab_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTextBlock_231FE1EBAE9E7A9FC30DAB2A20763090_label_en-US" xlink:label="lab_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTextBlock_231FE1EBAE9E7A9FC30DAB2A20763090" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Schedule of Business Acquisitions, by Acquisition [Table Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTextBlock" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTextBlock_231FE1EBAE9E7A9FC30DAB2A20763090" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTextBlock_231FE1EBAE9E7A9FC30DAB2A20763090" xlink:to="lab_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTextBlock_231FE1EBAE9E7A9FC30DAB2A20763090" xlink:type="arc"/>
<link:label id="lab_us-gaap_BusinessAcquisitionProFormaInformationTextBlock_288FA6986E804C5BC906AB2A2076CE43_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionProFormaInformationTextBlock_288FA6986E804C5BC906AB2A2076CE43" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Business Acquisition, Pro Forma Information </link:label>
<link:label id="lab_us-gaap_BusinessAcquisitionProFormaInformationTextBlock_288FA6986E804C5BC906AB2A2076CE43_label_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionProFormaInformationTextBlock_288FA6986E804C5BC906AB2A2076CE43" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Business Acquisition, Pro Forma Information [Table Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessAcquisitionProFormaInformationTextBlock" xlink:label="loc_us-gaap_BusinessAcquisitionProFormaInformationTextBlock_288FA6986E804C5BC906AB2A2076CE43" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessAcquisitionProFormaInformationTextBlock_288FA6986E804C5BC906AB2A2076CE43" xlink:to="lab_us-gaap_BusinessAcquisitionProFormaInformationTextBlock_288FA6986E804C5BC906AB2A2076CE43" xlink:type="arc"/>
<link:label id="lab_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock_77D7B718CD8F213FE249ED940CA5389C_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock_77D7B718CD8F213FE249ED940CA5389C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Components of Receivables </link:label>
<link:label id="lab_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock_77D7B718CD8F213FE249ED940CA5389C_label_en-US" xlink:label="lab_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock_77D7B718CD8F213FE249ED940CA5389C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock" xlink:label="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock_77D7B718CD8F213FE249ED940CA5389C" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock_77D7B718CD8F213FE249ED940CA5389C" xlink:to="lab_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock_77D7B718CD8F213FE249ED940CA5389C" xlink:type="arc"/>
<link:label id="lab_us-gaap_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable_268E4FC18726B04B733342ED894B0980_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable_268E4FC18726B04B733342ED894B0980" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Schedule of Revenue by Major Customers, by Reporting Segments [Table] </link:label>
<link:label id="lab_us-gaap_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable_268E4FC18726B04B733342ED894B0980_label_en-US" xlink:label="lab_us-gaap_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable_268E4FC18726B04B733342ED894B0980" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Schedule of Revenue by Major Customers, by Reporting Segments [Table] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable" xlink:label="loc_us-gaap_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable_268E4FC18726B04B733342ED894B0980" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable_268E4FC18726B04B733342ED894B0980" xlink:to="lab_us-gaap_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable_268E4FC18726B04B733342ED894B0980" xlink:type="arc"/>
<link:label id="lab_vsec_TotalDepartmentOfDefenseMember_10A5ABEBCC3413E02E1C42ED894B51A4_terseLabel_en-US" xlink:label="lab_vsec_TotalDepartmentOfDefenseMember_10A5ABEBCC3413E02E1C42ED894B51A4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> DoD </link:label>
<link:label id="lab_vsec_TotalDepartmentOfDefenseMember_10A5ABEBCC3413E02E1C42ED894B51A4_label_en-US" xlink:label="lab_vsec_TotalDepartmentOfDefenseMember_10A5ABEBCC3413E02E1C42ED894B51A4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Total Department of Defense [Member] </link:label>
<link:label id="lab_vsec_TotalDepartmentOfDefenseMember_10A5ABEBCC3413E02E1C42ED894B51A4_documentation_en-US" xlink:label="lab_vsec_TotalDepartmentOfDefenseMember_10A5ABEBCC3413E02E1C42ED894B51A4" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Represents all of the department of defense. </link:label>
<link:loc xlink:href="vsec-20191231.xsd#vsec_TotalDepartmentOfDefenseMember" xlink:label="loc_vsec_TotalDepartmentOfDefenseMember_10A5ABEBCC3413E02E1C42ED894B51A4" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_vsec_TotalDepartmentOfDefenseMember_10A5ABEBCC3413E02E1C42ED894B51A4" xlink:to="lab_vsec_TotalDepartmentOfDefenseMember_10A5ABEBCC3413E02E1C42ED894B51A4" xlink:type="arc"/>
<link:label id="lab_vsec_OtherGovernmentMember_A2865A6F8736D751E59D42ED894B807C_terseLabel_en-US" xlink:label="lab_vsec_OtherGovernmentMember_A2865A6F8736D751E59D42ED894B807C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other government </link:label>
<link:loc xlink:href="vsec-20191231.xsd#vsec_OtherGovernmentMember" xlink:label="loc_vsec_OtherGovernmentMember_A2865A6F8736D751E59D42ED894B807C" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_vsec_OtherGovernmentMember_A2865A6F8736D751E59D42ED894B807C" xlink:to="lab_vsec_OtherGovernmentMember_A2865A6F8736D751E59D42ED894B807C" xlink:type="arc"/>
<link:label id="lab_vsec_OtherCommercialMember_C5757D462D097DEED36A42ED894B3ED2_terseLabel_en-US" xlink:label="lab_vsec_OtherCommercialMember_C5757D462D097DEED36A42ED894B3ED2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Commercial </link:label>
<link:label id="lab_vsec_OtherCommercialMember_C5757D462D097DEED36A42ED894B3ED2_label_en-US" xlink:label="lab_vsec_OtherCommercialMember_C5757D462D097DEED36A42ED894B3ED2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Commercial [Member] </link:label>
<link:label id="lab_vsec_OtherCommercialMember_C5757D462D097DEED36A42ED894B3ED2_documentation_en-US" xlink:label="lab_vsec_OtherCommercialMember_C5757D462D097DEED36A42ED894B3ED2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Represents other commercial customers. </link:label>
<link:loc xlink:href="vsec-20191231.xsd#vsec_OtherCommercialMember" xlink:label="loc_vsec_OtherCommercialMember_C5757D462D097DEED36A42ED894B3ED2" xlink:type="locator"/>
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<link:label id="lab_us-gaap_EntityWideRevenueMajorCustomerLineItems_D17869CF8A54707D8B4E42ED894B23D1_terseLabel_en-US" xlink:label="lab_us-gaap_EntityWideRevenueMajorCustomerLineItems_D17869CF8A54707D8B4E42ED894B23D1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Revenue, Major Customer [Line Items] </link:label>
<link:label id="lab_us-gaap_EntityWideRevenueMajorCustomerLineItems_D17869CF8A54707D8B4E42ED894B23D1_label_en-US" xlink:label="lab_us-gaap_EntityWideRevenueMajorCustomerLineItems_D17869CF8A54707D8B4E42ED894B23D1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Revenue, Major Customer [Line Items] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EntityWideRevenueMajorCustomerLineItems" xlink:label="loc_us-gaap_EntityWideRevenueMajorCustomerLineItems_D17869CF8A54707D8B4E42ED894B23D1" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ConcentrationRiskPercentage1_E4565ED750A3BD7F134B42ED894B83E9_verboseLabel_en-US" xlink:label="lab_us-gaap_ConcentrationRiskPercentage1_E4565ED750A3BD7F134B42ED894B83E9" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Percentage of revenue by customer </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ConcentrationRiskPercentage1" xlink:label="loc_us-gaap_ConcentrationRiskPercentage1_E4565ED750A3BD7F134B42ED894B83E9" xlink:type="locator"/>
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<link:label id="lab_us-gaap_IncomeTaxDisclosureTextBlock_7B5666A7CB51A49EAC4942ED89BE4215_verboseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxDisclosureTextBlock_7B5666A7CB51A49EAC4942ED89BE4215" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Income Taxes </link:label>
<link:label id="lab_us-gaap_IncomeTaxDisclosureTextBlock_7B5666A7CB51A49EAC4942ED89BE4215_label_en-US" xlink:label="lab_us-gaap_IncomeTaxDisclosureTextBlock_7B5666A7CB51A49EAC4942ED89BE4215" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Income Tax Disclosure [Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeTaxDisclosureTextBlock" xlink:label="loc_us-gaap_IncomeTaxDisclosureTextBlock_7B5666A7CB51A49EAC4942ED89BE4215" xlink:type="locator"/>
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<link:label id="lab_us-gaap_DebtDisclosureAbstract_33D641DED1D9658A73777589F382B66E_label_en-US" xlink:label="lab_us-gaap_DebtDisclosureAbstract_33D641DED1D9658A73777589F382B66E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Disclosure [Abstract] </link:label>
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<link:label id="lab_us-gaap_DebtInstrumentTable_D25DE15442C2D4996F8B7589F382A1EA_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentTable_D25DE15442C2D4996F8B7589F382A1EA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Schedule of Long-term Debt Instruments [Table] </link:label>
<link:label id="lab_us-gaap_DebtInstrumentTable_D25DE15442C2D4996F8B7589F382A1EA_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentTable_D25DE15442C2D4996F8B7589F382A1EA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Schedule of Long-term Debt Instruments [Table] </link:label>
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<link:label id="lab_us-gaap_LongtermDebtTypeAxis_B623EA3FC2880837A3407589F383716B_terseLabel_en-US" xlink:label="lab_us-gaap_LongtermDebtTypeAxis_B623EA3FC2880837A3407589F383716B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Long-term Debt, Type [Axis] </link:label>
<link:label id="lab_us-gaap_LongtermDebtTypeAxis_B623EA3FC2880837A3407589F383716B_label_en-US" xlink:label="lab_us-gaap_LongtermDebtTypeAxis_B623EA3FC2880837A3407589F383716B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Long-term Debt, Type [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeAxis" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_B623EA3FC2880837A3407589F383716B" xlink:type="locator"/>
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<link:label id="lab_us-gaap_LongtermDebtTypeDomain_758E94B267BD3CA643E77589F3841C02_terseLabel_en-US" xlink:label="lab_us-gaap_LongtermDebtTypeDomain_758E94B267BD3CA643E77589F3841C02" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Long-term Debt, Type [Domain] </link:label>
<link:label id="lab_us-gaap_LongtermDebtTypeDomain_758E94B267BD3CA643E77589F3841C02_label_en-US" xlink:label="lab_us-gaap_LongtermDebtTypeDomain_758E94B267BD3CA643E77589F3841C02" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Long-term Debt, Type [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_758E94B267BD3CA643E77589F3841C02" xlink:type="locator"/>
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<link:label id="lab_vsec_AmendedAndRestatedMember_B34FF3E62F627D741AC77589F38498E6_terseLabel_en-US" xlink:label="lab_vsec_AmendedAndRestatedMember_B34FF3E62F627D741AC77589F38498E6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Amended and Restated </link:label>
<link:label id="lab_vsec_AmendedAndRestatedMember_B34FF3E62F627D741AC77589F38498E6_label_en-US" xlink:label="lab_vsec_AmendedAndRestatedMember_B34FF3E62F627D741AC77589F38498E6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Amended and Restated [Member] </link:label>
<link:label id="lab_vsec_AmendedAndRestatedMember_B34FF3E62F627D741AC77589F38498E6_documentation_en-US" xlink:label="lab_vsec_AmendedAndRestatedMember_B34FF3E62F627D741AC77589F38498E6" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Refers to the amended and restated loan agreements. </link:label>
<link:loc xlink:href="vsec-20191231.xsd#vsec_AmendedAndRestatedMember" xlink:label="loc_vsec_AmendedAndRestatedMember_B34FF3E62F627D741AC77589F38498E6" xlink:type="locator"/>
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<link:label id="lab_us-gaap_LoansPayableMember_4F3F20D3996873CE93DC7589F3841984_terseLabel_en-US" xlink:label="lab_us-gaap_LoansPayableMember_4F3F20D3996873CE93DC7589F3841984" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Term Loan </link:label>
<link:label id="lab_us-gaap_LoansPayableMember_4F3F20D3996873CE93DC7589F3841984_label_en-US" xlink:label="lab_us-gaap_LoansPayableMember_4F3F20D3996873CE93DC7589F3841984" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Loans Payable [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LoansPayableMember" xlink:label="loc_us-gaap_LoansPayableMember_4F3F20D3996873CE93DC7589F3841984" xlink:type="locator"/>
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<link:label id="lab_us-gaap_RevolvingCreditFacilityMember_6B8799B792C369091F967589F3845F4D_terseLabel_en-US" xlink:label="lab_us-gaap_RevolvingCreditFacilityMember_6B8799B792C369091F967589F3845F4D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Revolving Loans </link:label>
<link:label id="lab_us-gaap_RevolvingCreditFacilityMember_6B8799B792C369091F967589F3845F4D_label_en-US" xlink:label="lab_us-gaap_RevolvingCreditFacilityMember_6B8799B792C369091F967589F3845F4D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Revolving Credit Facility [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevolvingCreditFacilityMember" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_6B8799B792C369091F967589F3845F4D" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RevolvingCreditFacilityMember_6B8799B792C369091F967589F3845F4D" xlink:to="lab_us-gaap_RevolvingCreditFacilityMember_6B8799B792C369091F967589F3845F4D" xlink:type="arc"/>
<link:label id="lab_us-gaap_VariableRateAxis_A347275A9C08EC649F437589F384AAFE_terseLabel_en-US" xlink:label="lab_us-gaap_VariableRateAxis_A347275A9C08EC649F437589F384AAFE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Variable Rate [Axis] </link:label>
<link:label id="lab_us-gaap_VariableRateAxis_A347275A9C08EC649F437589F384AAFE_label_en-US" xlink:label="lab_us-gaap_VariableRateAxis_A347275A9C08EC649F437589F384AAFE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Variable Rate [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_VariableRateAxis" xlink:label="loc_us-gaap_VariableRateAxis_A347275A9C08EC649F437589F384AAFE" xlink:type="locator"/>
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<link:label id="lab_us-gaap_VariableRateDomain_6E66F9C21EBF6CCABA1A7589F385E7A5_terseLabel_en-US" xlink:label="lab_us-gaap_VariableRateDomain_6E66F9C21EBF6CCABA1A7589F385E7A5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Variable Rate [Domain] </link:label>
<link:label id="lab_us-gaap_VariableRateDomain_6E66F9C21EBF6CCABA1A7589F385E7A5_label_en-US" xlink:label="lab_us-gaap_VariableRateDomain_6E66F9C21EBF6CCABA1A7589F385E7A5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Variable Rate [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_VariableRateDomain" xlink:label="loc_us-gaap_VariableRateDomain_6E66F9C21EBF6CCABA1A7589F385E7A5" xlink:type="locator"/>
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<link:label id="lab_us-gaap_LondonInterbankOfferedRateLIBORMember_8D16257CBA8A54FB349E7589F38565CC_terseLabel_en-US" xlink:label="lab_us-gaap_LondonInterbankOfferedRateLIBORMember_8D16257CBA8A54FB349E7589F38565CC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> LIBOR </link:label>
<link:label id="lab_us-gaap_LondonInterbankOfferedRateLIBORMember_8D16257CBA8A54FB349E7589F38565CC_label_en-US" xlink:label="lab_us-gaap_LondonInterbankOfferedRateLIBORMember_8D16257CBA8A54FB349E7589F38565CC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> London Interbank Offered Rate (LIBOR) [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LondonInterbankOfferedRateLIBORMember" xlink:label="loc_us-gaap_LondonInterbankOfferedRateLIBORMember_8D16257CBA8A54FB349E7589F38565CC" xlink:type="locator"/>
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<link:label id="lab_us-gaap_BaseRateMember_856688FFD076F65B6AAE7589F3858335_terseLabel_en-US" xlink:label="lab_us-gaap_BaseRateMember_856688FFD076F65B6AAE7589F3858335" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Base Rate </link:label>
<link:label id="lab_us-gaap_BaseRateMember_856688FFD076F65B6AAE7589F3858335_label_en-US" xlink:label="lab_us-gaap_BaseRateMember_856688FFD076F65B6AAE7589F3858335" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Base Rate [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BaseRateMember" xlink:label="loc_us-gaap_BaseRateMember_856688FFD076F65B6AAE7589F3858335" xlink:type="locator"/>
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<link:label id="lab_us-gaap_DebtInstrumentLineItems_544E4A2AB21E510AC6867589F385624D_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentLineItems_544E4A2AB21E510AC6867589F385624D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Debt Instrument [Line Items] </link:label>
<link:label id="lab_us-gaap_DebtInstrumentLineItems_544E4A2AB21E510AC6867589F385624D_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentLineItems_544E4A2AB21E510AC6867589F385624D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Instrument [Line Items] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:label="loc_us-gaap_DebtInstrumentLineItems_544E4A2AB21E510AC6867589F385624D" xlink:type="locator"/>
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<link:label id="lab_us-gaap_DebtInstrumentCarryingAmount_5DB784F1D289964B20C67589F385E77B_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentCarryingAmount_5DB784F1D289964B20C67589F385E77B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Long-term debt </link:label>
<link:label id="lab_us-gaap_DebtInstrumentCarryingAmount_5DB784F1D289964B20C67589F385E77B_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentCarryingAmount_5DB784F1D289964B20C67589F385E77B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Long-term Debt, Gross </link:label>
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<link:label id="lab_us-gaap_DeferredFinanceCostsNet_59F0C357D5748ECBE2897589F386FC10_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_DeferredFinanceCostsNet_59F0C357D5748ECBE2897589F386FC10" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Less debt issuance costs </link:label>
<link:label id="lab_us-gaap_DeferredFinanceCostsNet_59F0C357D5748ECBE2897589F386FC10_label_en-US" xlink:label="lab_us-gaap_DeferredFinanceCostsNet_59F0C357D5748ECBE2897589F386FC10" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Issuance Costs, Net </link:label>
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<link:label id="lab_us-gaap_LongTermDebt_2A8D49E8CECE91798B8A7589F3864F44_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebt_2A8D49E8CECE91798B8A7589F3864F44" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Total long-term debt </link:label>
<link:label id="lab_us-gaap_LongTermDebt_2A8D49E8CECE91798B8A7589F3864F44_label_en-US" xlink:label="lab_us-gaap_LongTermDebt_2A8D49E8CECE91798B8A7589F3864F44" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Long-term Debt </link:label>
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<link:label id="lab_us-gaap_LongTermDebtCurrent_BF1129BDD0A7C26215817589F3865A85_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtCurrent_BF1129BDD0A7C26215817589F3865A85" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Less current portion </link:label>
<link:label id="lab_us-gaap_LongTermDebtCurrent_BF1129BDD0A7C26215817589F3865A85_label_en-US" xlink:label="lab_us-gaap_LongTermDebtCurrent_BF1129BDD0A7C26215817589F3865A85" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Long-term Debt, Current Maturities </link:label>
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<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtCurrent_BF1129BDD0A7C26215817589F3865A85" xlink:to="lab_us-gaap_LongTermDebtCurrent_BF1129BDD0A7C26215817589F3865A85" xlink:type="arc"/>
<link:label id="lab_us-gaap_LongTermDebtNoncurrent_418464317D5595DD73597589F38622EA_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtNoncurrent_418464317D5595DD73597589F38622EA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Long-term debt, less current portion </link:label>
<link:label id="lab_us-gaap_LongTermDebtNoncurrent_418464317D5595DD73597589F38622EA_label_en-US" xlink:label="lab_us-gaap_LongTermDebtNoncurrent_418464317D5595DD73597589F38622EA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Long-term Debt, Excluding Current Maturities </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtNoncurrent" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_418464317D5595DD73597589F38622EA" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtNoncurrent_418464317D5595DD73597589F38622EA" xlink:to="lab_us-gaap_LongTermDebtNoncurrent_418464317D5595DD73597589F38622EA" xlink:type="arc"/>
<link:label id="lab_us-gaap_LongTermDebtByMaturityAbstract_52BAAC07EC0630C5576B7589F386C4B2_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtByMaturityAbstract_52BAAC07EC0630C5576B7589F386C4B2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Long-term Debt, Fiscal Year Maturity [Abstract] </link:label>
<link:label id="lab_us-gaap_LongTermDebtByMaturityAbstract_52BAAC07EC0630C5576B7589F386C4B2_label_en-US" xlink:label="lab_us-gaap_LongTermDebtByMaturityAbstract_52BAAC07EC0630C5576B7589F386C4B2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Long-term Debt, Fiscal Year Maturity [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtByMaturityAbstract" xlink:label="loc_us-gaap_LongTermDebtByMaturityAbstract_52BAAC07EC0630C5576B7589F386C4B2" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtByMaturityAbstract_52BAAC07EC0630C5576B7589F386C4B2" xlink:to="lab_us-gaap_LongTermDebtByMaturityAbstract_52BAAC07EC0630C5576B7589F386C4B2" xlink:type="arc"/>
<link:label id="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_7EB09F1F87E01C18A3A57589F3871F7C_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_7EB09F1F87E01C18A3A57589F3871F7C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2020 </link:label>
<link:label id="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_7EB09F1F87E01C18A3A57589F3871F7C_label_en-US" xlink:label="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_7EB09F1F87E01C18A3A57589F3871F7C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_7EB09F1F87E01C18A3A57589F3871F7C" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_7EB09F1F87E01C18A3A57589F3871F7C" xlink:to="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_7EB09F1F87E01C18A3A57589F3871F7C" xlink:type="arc"/>
<link:label id="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_A9C263DE767F67425CE97589F38754E4_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_A9C263DE767F67425CE97589F38754E4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2021 </link:label>
<link:label id="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_A9C263DE767F67425CE97589F38754E4_label_en-US" xlink:label="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_A9C263DE767F67425CE97589F38754E4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Long-term Debt, Maturities, Repayments of Principal in Year Two </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_A9C263DE767F67425CE97589F38754E4" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_A9C263DE767F67425CE97589F38754E4" xlink:to="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_A9C263DE767F67425CE97589F38754E4" xlink:type="arc"/>
<link:label id="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_57E9329EBB46A81C43D57589F387C7B1_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_57E9329EBB46A81C43D57589F387C7B1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2022 </link:label>
<link:label id="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_57E9329EBB46A81C43D57589F387C7B1_label_en-US" xlink:label="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_57E9329EBB46A81C43D57589F387C7B1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Long-term Debt, Maturities, Repayments of Principal in Year Three </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_57E9329EBB46A81C43D57589F387C7B1" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_57E9329EBB46A81C43D57589F387C7B1" xlink:to="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_57E9329EBB46A81C43D57589F387C7B1" xlink:type="arc"/>
<link:label id="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_1E47F05A5A69ADB3E36B7589F3872BCD_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_1E47F05A5A69ADB3E36B7589F3872BCD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2023 </link:label>
<link:label id="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_1E47F05A5A69ADB3E36B7589F3872BCD_label_en-US" xlink:label="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_1E47F05A5A69ADB3E36B7589F3872BCD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Long-term Debt, Maturities, Repayments of Principal in Year Four </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_1E47F05A5A69ADB3E36B7589F3872BCD" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_1E47F05A5A69ADB3E36B7589F3872BCD" xlink:to="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_1E47F05A5A69ADB3E36B7589F3872BCD" xlink:type="arc"/>
<link:label id="lab_us-gaap_LongTermDebt_099A9E42F777E85204D77589F3878135_totalLabel_en-US" xlink:label="lab_us-gaap_LongTermDebt_099A9E42F777E85204D77589F3878135" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total long-term debt </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebt" xlink:label="loc_us-gaap_LongTermDebt_099A9E42F777E85204D77589F3878135" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebt_099A9E42F777E85204D77589F3878135" xlink:to="lab_us-gaap_LongTermDebt_099A9E42F777E85204D77589F3878135" xlink:type="arc"/>
<link:label id="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_619ABBE17002C2ABE6617589F387D7DB_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_619ABBE17002C2ABE6617589F387D7DB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Revolving loans maximum borrowing capacity </link:label>
<link:label id="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_619ABBE17002C2ABE6617589F387D7DB_label_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_619ABBE17002C2ABE6617589F387D7DB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Line of Credit Facility, Maximum Borrowing Capacity </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_619ABBE17002C2ABE6617589F387D7DB" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_619ABBE17002C2ABE6617589F387D7DB" xlink:to="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_619ABBE17002C2ABE6617589F387D7DB" xlink:type="arc"/>
<link:label id="lab_us-gaap_LettersOfCreditOutstandingAmount_698D051714E018A443167589F38868F1_terseLabel_en-US" xlink:label="lab_us-gaap_LettersOfCreditOutstandingAmount_698D051714E018A443167589F38868F1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Letters of credit outstanding </link:label>
<link:label id="lab_us-gaap_LettersOfCreditOutstandingAmount_698D051714E018A443167589F38868F1_label_en-US" xlink:label="lab_us-gaap_LettersOfCreditOutstandingAmount_698D051714E018A443167589F38868F1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Letters of Credit Outstanding, Amount </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LettersOfCreditOutstandingAmount" xlink:label="loc_us-gaap_LettersOfCreditOutstandingAmount_698D051714E018A443167589F38868F1" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LettersOfCreditOutstandingAmount_698D051714E018A443167589F38868F1" xlink:to="lab_us-gaap_LettersOfCreditOutstandingAmount_698D051714E018A443167589F38868F1" xlink:type="arc"/>
<link:label id="lab_vsec_RevolvingLoansPotentialIncrementinMaximumBorrowingCapacity_A6DA5DD79D0E7E1121AF7589F388F98E_terseLabel_en-US" xlink:label="lab_vsec_RevolvingLoansPotentialIncrementinMaximumBorrowingCapacity_A6DA5DD79D0E7E1121AF7589F388F98E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Revolving loans, potential increment in maximum borrowing capacity </link:label>
<link:label id="lab_vsec_RevolvingLoansPotentialIncrementinMaximumBorrowingCapacity_A6DA5DD79D0E7E1121AF7589F388F98E_label_en-US" xlink:label="lab_vsec_RevolvingLoansPotentialIncrementinMaximumBorrowingCapacity_A6DA5DD79D0E7E1121AF7589F388F98E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Revolving Loans, Potential Increment in Maximum Borrowing Capacity </link:label>
<link:label id="lab_vsec_RevolvingLoansPotentialIncrementinMaximumBorrowingCapacity_A6DA5DD79D0E7E1121AF7589F388F98E_documentation_en-US" xlink:label="lab_vsec_RevolvingLoansPotentialIncrementinMaximumBorrowingCapacity_A6DA5DD79D0E7E1121AF7589F388F98E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Potential increment in maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. </link:label>
<link:loc xlink:href="vsec-20191231.xsd#vsec_RevolvingLoansPotentialIncrementinMaximumBorrowingCapacity" xlink:label="loc_vsec_RevolvingLoansPotentialIncrementinMaximumBorrowingCapacity_A6DA5DD79D0E7E1121AF7589F388F98E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_vsec_RevolvingLoansPotentialIncrementinMaximumBorrowingCapacity_A6DA5DD79D0E7E1121AF7589F388F98E" xlink:to="lab_vsec_RevolvingLoansPotentialIncrementinMaximumBorrowingCapacity_A6DA5DD79D0E7E1121AF7589F388F98E" xlink:type="arc"/>
<link:label id="lab_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_47396B2CB3F5073832AC7589F388F43E_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_47396B2CB3F5073832AC7589F388F43E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Base margin </link:label>
<link:label id="lab_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_47396B2CB3F5073832AC7589F388F43E_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_47396B2CB3F5073832AC7589F388F43E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Basis Spread on Variable Rate </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_47396B2CB3F5073832AC7589F388F43E" xlink:type="locator"/>
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<link:label id="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_CE65202F32A23BC506037589F3889039_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_CE65202F32A23BC506037589F3889039" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Stated interest rate </link:label>
<link:label id="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_CE65202F32A23BC506037589F3889039_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_CE65202F32A23BC506037589F3889039" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Interest Rate, Stated Percentage </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_CE65202F32A23BC506037589F3889039" xlink:type="locator"/>
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<link:label id="lab_us-gaap_DebtInstrumentInterestRateEffectivePercentage_9ED05CD691C1AC0CB9747589F388B601_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentInterestRateEffectivePercentage_9ED05CD691C1AC0CB9747589F388B601" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Effective interest rate </link:label>
<link:label id="lab_us-gaap_DebtInstrumentInterestRateEffectivePercentage_9ED05CD691C1AC0CB9747589F388B601_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentInterestRateEffectivePercentage_9ED05CD691C1AC0CB9747589F388B601" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Interest Rate, Effective Percentage </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentInterestRateEffectivePercentage" xlink:label="loc_us-gaap_DebtInstrumentInterestRateEffectivePercentage_9ED05CD691C1AC0CB9747589F388B601" xlink:type="locator"/>
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<link:label id="lab_us-gaap_InterestExpense_377B26D5A9865EC5ABBA7589F388C6DD_terseLabel_en-US" xlink:label="lab_us-gaap_InterestExpense_377B26D5A9865EC5ABBA7589F388C6DD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Interest expense, net </link:label>
<link:label id="lab_us-gaap_InterestExpense_377B26D5A9865EC5ABBA7589F388C6DD_label_en-US" xlink:label="lab_us-gaap_InterestExpense_377B26D5A9865EC5ABBA7589F388C6DD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Interest Expense </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestExpense" xlink:label="loc_us-gaap_InterestExpense_377B26D5A9865EC5ABBA7589F388C6DD" xlink:type="locator"/>
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<link:label id="lab_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis_7EE37E53F7B26A674F1C9ADDF3C65B42_terseLabel_en-US" xlink:label="lab_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis_7EE37E53F7B26A674F1C9ADDF3C65B42" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] </link:label>
<link:label id="lab_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis_7EE37E53F7B26A674F1C9ADDF3C65B42_label_en-US" xlink:label="lab_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis_7EE37E53F7B26A674F1C9ADDF3C65B42" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] </link:label>
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<link:label id="lab_us-gaap_RevenueRemainingPerformanceObligationPercentage_9E4D215F23676F1422729ADDF3C7EFE1_terseLabel_en-US" xlink:label="lab_us-gaap_RevenueRemainingPerformanceObligationPercentage_9E4D215F23676F1422729ADDF3C7EFE1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Revenue, remaining performance obligation, percentage </link:label>
<link:label id="lab_us-gaap_RevenueRemainingPerformanceObligationPercentage_9E4D215F23676F1422729ADDF3C7EFE1_label_en-US" xlink:label="lab_us-gaap_RevenueRemainingPerformanceObligationPercentage_9E4D215F23676F1422729ADDF3C7EFE1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Revenue, Remaining Performance Obligation, Percentage </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevenueRemainingPerformanceObligationPercentage" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationPercentage_9E4D215F23676F1422729ADDF3C7EFE1" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationPercentage_9E4D215F23676F1422729ADDF3C7EFE1" xlink:to="lab_us-gaap_RevenueRemainingPerformanceObligationPercentage_9E4D215F23676F1422729ADDF3C7EFE1" xlink:type="arc"/>
<link:label id="lab_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_59898F92949E0D44A3AC9ADDF3C74247_terseLabel_en-US" xlink:label="lab_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_59898F92949E0D44A3AC9ADDF3C74247" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Revenue, remaining performance obligation, expected timing of satisfaction, period </link:label>
<link:label id="lab_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_59898F92949E0D44A3AC9ADDF3C74247_label_en-US" xlink:label="lab_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_59898F92949E0D44A3AC9ADDF3C74247" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_59898F92949E0D44A3AC9ADDF3C74247" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_59898F92949E0D44A3AC9ADDF3C74247" xlink:to="lab_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_59898F92949E0D44A3AC9ADDF3C74247" xlink:type="arc"/>
<link:label id="lab_us-gaap_ScheduleOfRentExpenseTableTextBlock_676E5A4DF471847184DC4240E75B8277_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfRentExpenseTableTextBlock_676E5A4DF471847184DC4240E75B8277" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Lease Expense </link:label>
<link:label id="lab_us-gaap_ScheduleOfRentExpenseTableTextBlock_676E5A4DF471847184DC4240E75B8277_label_en-US" xlink:label="lab_us-gaap_ScheduleOfRentExpenseTableTextBlock_676E5A4DF471847184DC4240E75B8277" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Schedule of Rent Expense [Table Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfRentExpenseTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfRentExpenseTableTextBlock_676E5A4DF471847184DC4240E75B8277" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfRentExpenseTableTextBlock_676E5A4DF471847184DC4240E75B8277" xlink:to="lab_us-gaap_ScheduleOfRentExpenseTableTextBlock_676E5A4DF471847184DC4240E75B8277" xlink:type="arc"/>
<link:label id="lab_srt_ContractualObligationFiscalYearMaturityScheduleTableTextBlock_04E9F49D26B66CFDDB104240E75CB0CF_verboseLabel_en-US" xlink:label="lab_srt_ContractualObligationFiscalYearMaturityScheduleTableTextBlock_04E9F49D26B66CFDDB104240E75CB0CF" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Future Minimum Annual Non-cancelable Commitments - Leases </link:label>
<link:label id="lab_srt_ContractualObligationFiscalYearMaturityScheduleTableTextBlock_04E9F49D26B66CFDDB104240E75CB0CF_label_en-US" xlink:label="lab_srt_ContractualObligationFiscalYearMaturityScheduleTableTextBlock_04E9F49D26B66CFDDB104240E75CB0CF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Contractual Obligation, Fiscal Year Maturity [Table Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ContractualObligationFiscalYearMaturityScheduleTableTextBlock" xlink:label="loc_srt_ContractualObligationFiscalYearMaturityScheduleTableTextBlock_04E9F49D26B66CFDDB104240E75CB0CF" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_ContractualObligationFiscalYearMaturityScheduleTableTextBlock_04E9F49D26B66CFDDB104240E75CB0CF" xlink:to="lab_srt_ContractualObligationFiscalYearMaturityScheduleTableTextBlock_04E9F49D26B66CFDDB104240E75CB0CF" xlink:type="arc"/>
<link:label id="lab_us-gaap_DeferredCostsCapitalizedPrepaidAndOtherAssetsDisclosureAbstract_6850FB0C5009414D3CC1ED940B80543C_label_en-US" xlink:label="lab_us-gaap_DeferredCostsCapitalizedPrepaidAndOtherAssetsDisclosureAbstract_6850FB0C5009414D3CC1ED940B80543C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredCostsCapitalizedPrepaidAndOtherAssetsDisclosureAbstract" xlink:label="loc_us-gaap_DeferredCostsCapitalizedPrepaidAndOtherAssetsDisclosureAbstract_6850FB0C5009414D3CC1ED940B80543C" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DeferredCostsCapitalizedPrepaidAndOtherAssetsDisclosureAbstract_6850FB0C5009414D3CC1ED940B80543C" xlink:to="lab_us-gaap_DeferredCostsCapitalizedPrepaidAndOtherAssetsDisclosureAbstract_6850FB0C5009414D3CC1ED940B80543C" xlink:type="arc"/>
<link:label id="lab_us-gaap_OtherAssetsDisclosureTextBlock_81FC34ACAC5583351406ED940B80BB47_verboseLabel_en-US" xlink:label="lab_us-gaap_OtherAssetsDisclosureTextBlock_81FC34ACAC5583351406ED940B80BB47" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Other Current Assets and Other Assets </link:label>
<link:label id="lab_us-gaap_OtherAssetsDisclosureTextBlock_81FC34ACAC5583351406ED940B80BB47_label_en-US" xlink:label="lab_us-gaap_OtherAssetsDisclosureTextBlock_81FC34ACAC5583351406ED940B80BB47" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Assets Disclosure [Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherAssetsDisclosureTextBlock" xlink:label="loc_us-gaap_OtherAssetsDisclosureTextBlock_81FC34ACAC5583351406ED940B80BB47" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherAssetsDisclosureTextBlock_81FC34ACAC5583351406ED940B80BB47" xlink:to="lab_us-gaap_OtherAssetsDisclosureTextBlock_81FC34ACAC5583351406ED940B80BB47" xlink:type="arc"/>
<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_EE906680159B9970F1C17589F32A697D_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_EE906680159B9970F1C17589F32A697D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2020 </link:label>
<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_EE906680159B9970F1C17589F32A697D_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_EE906680159B9970F1C17589F32A697D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_EE906680159B9970F1C17589F32A697D" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_EE906680159B9970F1C17589F32A697D" xlink:to="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_EE906680159B9970F1C17589F32A697D" xlink:type="arc"/>
<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_E13A83ABCA2FF616A6287589F32B5A7D_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_E13A83ABCA2FF616A6287589F32B5A7D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2021 </link:label>
<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_E13A83ABCA2FF616A6287589F32B5A7D_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_E13A83ABCA2FF616A6287589F32B5A7D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lessee, Operating Lease, Liability, Payments, Due Year Two </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_E13A83ABCA2FF616A6287589F32B5A7D" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_E13A83ABCA2FF616A6287589F32B5A7D" xlink:to="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_E13A83ABCA2FF616A6287589F32B5A7D" xlink:type="arc"/>
<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_E7CBB1EA6522B54A2D4D7589F32B80B5_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_E7CBB1EA6522B54A2D4D7589F32B80B5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2022 </link:label>
<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_E7CBB1EA6522B54A2D4D7589F32B80B5_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_E7CBB1EA6522B54A2D4D7589F32B80B5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lessee, Operating Lease, Liability, Payments, Due Year Three </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_E7CBB1EA6522B54A2D4D7589F32B80B5" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_E7CBB1EA6522B54A2D4D7589F32B80B5" xlink:to="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_E7CBB1EA6522B54A2D4D7589F32B80B5" xlink:type="arc"/>
<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_64B5F5829DB3F09363237589F32B3644_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_64B5F5829DB3F09363237589F32B3644" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2023 </link:label>
<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_64B5F5829DB3F09363237589F32B3644_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_64B5F5829DB3F09363237589F32B3644" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lessee, Operating Lease, Liability, Payments, Due Year Four </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_64B5F5829DB3F09363237589F32B3644" xlink:type="locator"/>
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<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_99FCD0682B9DF70DABBD7589F32B92CC_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_99FCD0682B9DF70DABBD7589F32B92CC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2024 </link:label>
<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_99FCD0682B9DF70DABBD7589F32B92CC_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_99FCD0682B9DF70DABBD7589F32B92CC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lessee, Operating Lease, Liability, Payments, Due Year Five </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_99FCD0682B9DF70DABBD7589F32B92CC" xlink:type="locator"/>
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<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_B1561D0EEC478CAF66C27589F32B2C6C_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_B1561D0EEC478CAF66C27589F32B2C6C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> After 2024 </link:label>
<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_B1561D0EEC478CAF66C27589F32B2C6C_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_B1561D0EEC478CAF66C27589F32B2C6C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lessee, Operating Lease, Liability, Payments, Due after Year Five </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_B1561D0EEC478CAF66C27589F32B2C6C" xlink:type="locator"/>
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<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_11B8F0960C32CA15A98A7589F32C8BC6_totalLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_11B8F0960C32CA15A98A7589F32C8BC6" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Minimum lease payments </link:label>
<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_11B8F0960C32CA15A98A7589F32C8BC6_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_11B8F0960C32CA15A98A7589F32C8BC6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lessee, Operating Lease, Liability, Payments, Due </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_11B8F0960C32CA15A98A7589F32C8BC6" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_11B8F0960C32CA15A98A7589F32C8BC6" xlink:to="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_11B8F0960C32CA15A98A7589F32C8BC6" xlink:type="arc"/>
<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_098C533EBFF55BF77BC37589F32C204E_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_098C533EBFF55BF77BC37589F32C204E" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Less: imputed interest </link:label>
<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_098C533EBFF55BF77BC37589F32C204E_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_098C533EBFF55BF77BC37589F32C204E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lessee, Operating Lease, Liability, Undiscounted Excess Amount </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_098C533EBFF55BF77BC37589F32C204E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_098C533EBFF55BF77BC37589F32C204E" xlink:to="lab_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_098C533EBFF55BF77BC37589F32C204E" xlink:type="arc"/>
<link:label id="lab_us-gaap_OperatingLeaseLiability_7B3C76F5741F6831DD377589F32CD4AE_totalLabel_en-US" xlink:label="lab_us-gaap_OperatingLeaseLiability_7B3C76F5741F6831DD377589F32CD4AE" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Present value of minimum lease payments </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeaseLiability" xlink:label="loc_us-gaap_OperatingLeaseLiability_7B3C76F5741F6831DD377589F32CD4AE" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeaseLiability_7B3C76F5741F6831DD377589F32CD4AE" xlink:to="lab_us-gaap_OperatingLeaseLiability_7B3C76F5741F6831DD377589F32CD4AE" xlink:type="arc"/>
<link:label id="lab_us-gaap_OperatingLeaseLiabilityCurrent_053A4B62B1E1D503D8697589F32C7343_negatedLabel_en-US" xlink:label="lab_us-gaap_OperatingLeaseLiabilityCurrent_053A4B62B1E1D503D8697589F32C7343" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Less: current maturities of lease liabilities </link:label>
<link:label id="lab_us-gaap_OperatingLeaseLiabilityCurrent_053A4B62B1E1D503D8697589F32C7343_label_en-US" xlink:label="lab_us-gaap_OperatingLeaseLiabilityCurrent_053A4B62B1E1D503D8697589F32C7343" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Lease, Liability, Current </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeaseLiabilityCurrent" xlink:label="loc_us-gaap_OperatingLeaseLiabilityCurrent_053A4B62B1E1D503D8697589F32C7343" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeaseLiabilityCurrent_053A4B62B1E1D503D8697589F32C7343" xlink:to="lab_us-gaap_OperatingLeaseLiabilityCurrent_053A4B62B1E1D503D8697589F32C7343" xlink:type="arc"/>
<link:label id="lab_us-gaap_OperatingLeaseLiabilityNoncurrent_8318436A22FDB65E14C87589F32C5EA9_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeaseLiabilityNoncurrent_8318436A22FDB65E14C87589F32C5EA9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Long-term lease liabilities </link:label>
<link:label id="lab_us-gaap_OperatingLeaseLiabilityNoncurrent_8318436A22FDB65E14C87589F32C5EA9_label_en-US" xlink:label="lab_us-gaap_OperatingLeaseLiabilityNoncurrent_8318436A22FDB65E14C87589F32C5EA9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Lease, Liability, Noncurrent </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent" xlink:label="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_8318436A22FDB65E14C87589F32C5EA9" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_8318436A22FDB65E14C87589F32C5EA9" xlink:to="lab_us-gaap_OperatingLeaseLiabilityNoncurrent_8318436A22FDB65E14C87589F32C5EA9" xlink:type="arc"/>
<link:label id="lab_us-gaap_PropertyPlantAndEquipmentTextBlock_B3EC17B7CEB63BD151F0ED940B6BC6C9_terseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentTextBlock_B3EC17B7CEB63BD151F0ED940B6BC6C9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Property and Equipment </link:label>
<link:label id="lab_us-gaap_PropertyPlantAndEquipmentTextBlock_B3EC17B7CEB63BD151F0ED940B6BC6C9_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentTextBlock_B3EC17B7CEB63BD151F0ED940B6BC6C9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Property, Plant and Equipment [Table Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTextBlock" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTextBlock_B3EC17B7CEB63BD151F0ED940B6BC6C9" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTextBlock_B3EC17B7CEB63BD151F0ED940B6BC6C9" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentTextBlock_B3EC17B7CEB63BD151F0ED940B6BC6C9" xlink:type="arc"/>
<link:label id="lab_us-gaap_SharesIssuedPricePerShare_52AB3A0FB235269C7C9DED940CB2BE27_terseLabel_en-US" xlink:label="lab_us-gaap_SharesIssuedPricePerShare_52AB3A0FB235269C7C9DED940CB2BE27" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Proceeds from the issuance of common stock (in dollars per share) </link:label>
<link:label id="lab_us-gaap_SharesIssuedPricePerShare_52AB3A0FB235269C7C9DED940CB2BE27_label_en-US" xlink:label="lab_us-gaap_SharesIssuedPricePerShare_52AB3A0FB235269C7C9DED940CB2BE27" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Shares Issued, Price Per Share </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SharesIssuedPricePerShare" xlink:label="loc_us-gaap_SharesIssuedPricePerShare_52AB3A0FB235269C7C9DED940CB2BE27" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SharesIssuedPricePerShare_52AB3A0FB235269C7C9DED940CB2BE27" xlink:to="lab_us-gaap_SharesIssuedPricePerShare_52AB3A0FB235269C7C9DED940CB2BE27" xlink:type="arc"/>
<link:label id="lab_vsec_CommonStockVotingRightsNumberOfVotes_26A1532663318E88D27FED940CB274FF_terseLabel_en-US" xlink:label="lab_vsec_CommonStockVotingRightsNumberOfVotes_26A1532663318E88D27FED940CB274FF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Number of votes stockholders are entitled to per common share </link:label>
<link:label id="lab_vsec_CommonStockVotingRightsNumberOfVotes_26A1532663318E88D27FED940CB274FF_label_en-US" xlink:label="lab_vsec_CommonStockVotingRightsNumberOfVotes_26A1532663318E88D27FED940CB274FF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Common Stock, Voting Rights, Number Of Votes </link:label>
<link:label id="lab_vsec_CommonStockVotingRightsNumberOfVotes_26A1532663318E88D27FED940CB274FF_documentation_en-US" xlink:label="lab_vsec_CommonStockVotingRightsNumberOfVotes_26A1532663318E88D27FED940CB274FF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Number of votes stockholders are entitled to per common share </link:label>
<link:loc xlink:href="vsec-20191231.xsd#vsec_CommonStockVotingRightsNumberOfVotes" xlink:label="loc_vsec_CommonStockVotingRightsNumberOfVotes_26A1532663318E88D27FED940CB274FF" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_vsec_CommonStockVotingRightsNumberOfVotes_26A1532663318E88D27FED940CB274FF" xlink:to="lab_vsec_CommonStockVotingRightsNumberOfVotes_26A1532663318E88D27FED940CB274FF" xlink:type="arc"/>
<link:label id="lab_us-gaap_SubsequentEventsAbstract_A8FB6511A1F260864F099D246E542BAD_label_en-US" xlink:label="lab_us-gaap_SubsequentEventsAbstract_A8FB6511A1F260864F099D246E542BAD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Subsequent Events [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SubsequentEventsAbstract" xlink:label="loc_us-gaap_SubsequentEventsAbstract_A8FB6511A1F260864F099D246E542BAD" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SubsequentEventsAbstract_A8FB6511A1F260864F099D246E542BAD" xlink:to="lab_us-gaap_SubsequentEventsAbstract_A8FB6511A1F260864F099D246E542BAD" xlink:type="arc"/>
<link:label id="lab_us-gaap_SubsequentEventTable_75B12B553707D01D3FF19D246E56561B_terseLabel_en-US" xlink:label="lab_us-gaap_SubsequentEventTable_75B12B553707D01D3FF19D246E56561B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Subsequent Event [Table] </link:label>
<link:label id="lab_us-gaap_SubsequentEventTable_75B12B553707D01D3FF19D246E56561B_label_en-US" xlink:label="lab_us-gaap_SubsequentEventTable_75B12B553707D01D3FF19D246E56561B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Subsequent Event [Table] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SubsequentEventTable" xlink:label="loc_us-gaap_SubsequentEventTable_75B12B553707D01D3FF19D246E56561B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SubsequentEventTable_75B12B553707D01D3FF19D246E56561B" xlink:to="lab_us-gaap_SubsequentEventTable_75B12B553707D01D3FF19D246E56561B" xlink:type="arc"/>
<link:label id="lab_us-gaap_SubsequentEventTypeAxis_CACE20EE46A1C75BECCA9D246E57385C_terseLabel_en-US" xlink:label="lab_us-gaap_SubsequentEventTypeAxis_CACE20EE46A1C75BECCA9D246E57385C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Subsequent Event Type [Axis] </link:label>
<link:label id="lab_us-gaap_SubsequentEventTypeAxis_CACE20EE46A1C75BECCA9D246E57385C_label_en-US" xlink:label="lab_us-gaap_SubsequentEventTypeAxis_CACE20EE46A1C75BECCA9D246E57385C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Subsequent Event Type [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SubsequentEventTypeAxis" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_CACE20EE46A1C75BECCA9D246E57385C" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_CACE20EE46A1C75BECCA9D246E57385C" xlink:to="lab_us-gaap_SubsequentEventTypeAxis_CACE20EE46A1C75BECCA9D246E57385C" xlink:type="arc"/>
<link:label id="lab_us-gaap_SubsequentEventTypeDomain_0A43F96544EB7C2A7E1B9D246E57050A_terseLabel_en-US" xlink:label="lab_us-gaap_SubsequentEventTypeDomain_0A43F96544EB7C2A7E1B9D246E57050A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Subsequent Event Type [Domain] </link:label>
<link:label id="lab_us-gaap_SubsequentEventTypeDomain_0A43F96544EB7C2A7E1B9D246E57050A_label_en-US" xlink:label="lab_us-gaap_SubsequentEventTypeDomain_0A43F96544EB7C2A7E1B9D246E57050A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Subsequent Event Type [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SubsequentEventTypeDomain" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_0A43F96544EB7C2A7E1B9D246E57050A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_0A43F96544EB7C2A7E1B9D246E57050A" xlink:to="lab_us-gaap_SubsequentEventTypeDomain_0A43F96544EB7C2A7E1B9D246E57050A" xlink:type="arc"/>
<link:label id="lab_us-gaap_SubsequentEventMember_FDEC53DA179489BDE9F89D246E57F097_terseLabel_en-US" xlink:label="lab_us-gaap_SubsequentEventMember_FDEC53DA179489BDE9F89D246E57F097" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Subsequent Event </link:label>
<link:label id="lab_us-gaap_SubsequentEventMember_FDEC53DA179489BDE9F89D246E57F097_label_en-US" xlink:label="lab_us-gaap_SubsequentEventMember_FDEC53DA179489BDE9F89D246E57F097" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Subsequent Event [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SubsequentEventMember" xlink:label="loc_us-gaap_SubsequentEventMember_FDEC53DA179489BDE9F89D246E57F097" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SubsequentEventMember_FDEC53DA179489BDE9F89D246E57F097" xlink:to="lab_us-gaap_SubsequentEventMember_FDEC53DA179489BDE9F89D246E57F097" xlink:type="arc"/>
<link:label id="lab_vsec_BusinessDivestitureAxis_C6701EFCDC6E682DCA289D246E59D4AE_terseLabel_en-US" xlink:label="lab_vsec_BusinessDivestitureAxis_C6701EFCDC6E682DCA289D246E59D4AE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Business Divestiture [Axis] </link:label>
<link:label id="lab_vsec_BusinessDivestitureAxis_C6701EFCDC6E682DCA289D246E59D4AE_label_en-US" xlink:label="lab_vsec_BusinessDivestitureAxis_C6701EFCDC6E682DCA289D246E59D4AE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Business Divestiture [Axis] </link:label>
<link:label id="lab_vsec_BusinessDivestitureAxis_C6701EFCDC6E682DCA289D246E59D4AE_documentation_en-US" xlink:label="lab_vsec_BusinessDivestitureAxis_C6701EFCDC6E682DCA289D246E59D4AE" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Business Divestiture [Axis] </link:label>
<link:loc xlink:href="vsec-20191231.xsd#vsec_BusinessDivestitureAxis" xlink:label="loc_vsec_BusinessDivestitureAxis_C6701EFCDC6E682DCA289D246E59D4AE" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_vsec_BusinessDivestitureAxis_C6701EFCDC6E682DCA289D246E59D4AE" xlink:to="lab_vsec_BusinessDivestitureAxis_C6701EFCDC6E682DCA289D246E59D4AE" xlink:type="arc"/>
<link:label id="lab_vsec_BusinessDivestitureDomain_49E59FCDE7C409D25C769D246E59D241_terseLabel_en-US" xlink:label="lab_vsec_BusinessDivestitureDomain_49E59FCDE7C409D25C769D246E59D241" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Business Divestiture [Domain] </link:label>
<link:label id="lab_vsec_BusinessDivestitureDomain_49E59FCDE7C409D25C769D246E59D241_label_en-US" xlink:label="lab_vsec_BusinessDivestitureDomain_49E59FCDE7C409D25C769D246E59D241" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Business Divestiture [Domain] </link:label>
<link:label id="lab_vsec_BusinessDivestitureDomain_49E59FCDE7C409D25C769D246E59D241_documentation_en-US" xlink:label="lab_vsec_BusinessDivestitureDomain_49E59FCDE7C409D25C769D246E59D241" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> [Domain] for Business Divestiture [Axis] </link:label>
<link:loc xlink:href="vsec-20191231.xsd#vsec_BusinessDivestitureDomain" xlink:label="loc_vsec_BusinessDivestitureDomain_49E59FCDE7C409D25C769D246E59D241" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_vsec_BusinessDivestitureDomain_49E59FCDE7C409D25C769D246E59D241" xlink:to="lab_vsec_BusinessDivestitureDomain_49E59FCDE7C409D25C769D246E59D241" xlink:type="arc"/>
<link:label id="lab_vsec_PrimeTurbinesLLCMember_BD1B2DD9C2DF2029E32C9D246E59B40E_terseLabel_en-US" xlink:label="lab_vsec_PrimeTurbinesLLCMember_BD1B2DD9C2DF2029E32C9D246E59B40E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Prime Turbines </link:label>
<link:label id="lab_vsec_PrimeTurbinesLLCMember_BD1B2DD9C2DF2029E32C9D246E59B40E_label_en-US" xlink:label="lab_vsec_PrimeTurbinesLLCMember_BD1B2DD9C2DF2029E32C9D246E59B40E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Prime Turbines LLC [Member] </link:label>
<link:label id="lab_vsec_PrimeTurbinesLLCMember_BD1B2DD9C2DF2029E32C9D246E59B40E_documentation_en-US" xlink:label="lab_vsec_PrimeTurbinesLLCMember_BD1B2DD9C2DF2029E32C9D246E59B40E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Prime Turbines LLC [Member] </link:label>
<link:loc xlink:href="vsec-20191231.xsd#vsec_PrimeTurbinesLLCMember" xlink:label="loc_vsec_PrimeTurbinesLLCMember_BD1B2DD9C2DF2029E32C9D246E59B40E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_vsec_PrimeTurbinesLLCMember_BD1B2DD9C2DF2029E32C9D246E59B40E" xlink:to="lab_vsec_PrimeTurbinesLLCMember_BD1B2DD9C2DF2029E32C9D246E59B40E" xlink:type="arc"/>
<link:label id="lab_srt_StatementScenarioAxis_6371F2C54DC188A7184F9D246E591322_terseLabel_en-US" xlink:label="lab_srt_StatementScenarioAxis_6371F2C54DC188A7184F9D246E591322" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Scenario [Axis] </link:label>
<link:label id="lab_srt_StatementScenarioAxis_6371F2C54DC188A7184F9D246E591322_label_en-US" xlink:label="lab_srt_StatementScenarioAxis_6371F2C54DC188A7184F9D246E591322" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Scenario [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_StatementScenarioAxis" xlink:label="loc_srt_StatementScenarioAxis_6371F2C54DC188A7184F9D246E591322" xlink:type="locator"/>
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<link:label id="lab_srt_ScenarioUnspecifiedDomain_3374B25B64D58AEC95859D246E5A67F5_label_en-US" xlink:label="lab_srt_ScenarioUnspecifiedDomain_3374B25B64D58AEC95859D246E5A67F5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Scenario [Domain] </link:label>
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<link:label id="lab_srt_ScenarioForecastMember_82B1445B26BC59C52EBB9D246E5FBEFE_label_en-US" xlink:label="lab_srt_ScenarioForecastMember_82B1445B26BC59C52EBB9D246E5FBEFE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Forecast [Member] </link:label>
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<link:label id="lab_us-gaap_SubsequentEventLineItems_0EA750451445441A8D809D246E5FBF25_terseLabel_en-US" xlink:label="lab_us-gaap_SubsequentEventLineItems_0EA750451445441A8D809D246E5FBF25" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Subsequent Event [Line Items] </link:label>
<link:label id="lab_us-gaap_SubsequentEventLineItems_0EA750451445441A8D809D246E5FBF25_label_en-US" xlink:label="lab_us-gaap_SubsequentEventLineItems_0EA750451445441A8D809D246E5FBF25" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Subsequent Event [Line Items] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SubsequentEventLineItems" xlink:label="loc_us-gaap_SubsequentEventLineItems_0EA750451445441A8D809D246E5FBF25" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ProceedsFromDivestitureOfBusinesses_C947CCA70D36C6D3DA099D246E60E5F5_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromDivestitureOfBusinesses_C947CCA70D36C6D3DA099D246E60E5F5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Proceeds from sale of business </link:label>
<link:label id="lab_us-gaap_ProceedsFromDivestitureOfBusinesses_C947CCA70D36C6D3DA099D246E60E5F5_label_en-US" xlink:label="lab_us-gaap_ProceedsFromDivestitureOfBusinesses_C947CCA70D36C6D3DA099D246E60E5F5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Proceeds from Divestiture of Businesses </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromDivestitureOfBusinesses" xlink:label="loc_us-gaap_ProceedsFromDivestitureOfBusinesses_C947CCA70D36C6D3DA099D246E60E5F5" xlink:type="locator"/>
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<link:label id="lab_us-gaap_GainLossOnSaleOfBusiness_729E3E10FA65EF434B869D246E607E32_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_GainLossOnSaleOfBusiness_729E3E10FA65EF434B869D246E607E32" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Non-cash loss on sale of business </link:label>
<link:label id="lab_us-gaap_GainLossOnSaleOfBusiness_729E3E10FA65EF434B869D246E607E32_label_en-US" xlink:label="lab_us-gaap_GainLossOnSaleOfBusiness_729E3E10FA65EF434B869D246E607E32" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Gain (Loss) on Disposition of Business </link:label>
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<link:label id="lab_us-gaap_ScheduleOfDebtInstrumentsTextBlock_AE1CFCB16DD1C7DBF129ED940C20E2AC_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfDebtInstrumentsTextBlock_AE1CFCB16DD1C7DBF129ED940C20E2AC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Schedule of Long-term Debt </link:label>
<link:label id="lab_us-gaap_ScheduleOfDebtInstrumentsTextBlock_AE1CFCB16DD1C7DBF129ED940C20E2AC_label_en-US" xlink:label="lab_us-gaap_ScheduleOfDebtInstrumentsTextBlock_AE1CFCB16DD1C7DBF129ED940C20E2AC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Schedule of Long-term Debt Instruments [Table Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfDebtInstrumentsTextBlock" xlink:label="loc_us-gaap_ScheduleOfDebtInstrumentsTextBlock_AE1CFCB16DD1C7DBF129ED940C20E2AC" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock_17F17A31B59369B36C1FED940C209AE7_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock_17F17A31B59369B36C1FED940C209AE7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Schedule of Term Loan Payments </link:label>
<link:label id="lab_us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock_17F17A31B59369B36C1FED940C209AE7_label_en-US" xlink:label="lab_us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock_17F17A31B59369B36C1FED940C209AE7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Schedule of Maturities of Long-term Debt [Table Text Block] </link:label>
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<link:label id="lab_us-gaap_AssetsAbstract_B877EEBD87BBAC82CDCCA24E86260B58_verboseLabel_en-US" xlink:label="lab_us-gaap_AssetsAbstract_B877EEBD87BBAC82CDCCA24E86260B58" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Assets </link:label>
<link:label id="lab_us-gaap_AssetsAbstract_B877EEBD87BBAC82CDCCA24E86260B58_label_en-US" xlink:label="lab_us-gaap_AssetsAbstract_B877EEBD87BBAC82CDCCA24E86260B58" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Assets [Abstract] </link:label>
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<link:label id="lab_us-gaap_AssetsCurrentAbstract_2E6FA80A86678807B4DCA24E86266739_terseLabel_en-US" xlink:label="lab_us-gaap_AssetsCurrentAbstract_2E6FA80A86678807B4DCA24E86266739" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Current assets: </link:label>
<link:label id="lab_us-gaap_AssetsCurrentAbstract_2E6FA80A86678807B4DCA24E86266739_label_en-US" xlink:label="lab_us-gaap_AssetsCurrentAbstract_2E6FA80A86678807B4DCA24E86266739" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Assets, Current [Abstract] </link:label>
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<link:label id="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_405EE3638236BD8FD6D2A24E8626C475_terseLabel_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_405EE3638236BD8FD6D2A24E8626C475" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Cash and cash equivalents </link:label>
<link:label id="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_405EE3638236BD8FD6D2A24E8626C475_label_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_405EE3638236BD8FD6D2A24E8626C475" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Cash and Cash Equivalents, at Carrying Value </link:label>
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<link:label id="lab_us-gaap_InventoryFinishedGoods_3BA7E939886C78DFAD78A24E862733E3_terseLabel_en-US" xlink:label="lab_us-gaap_InventoryFinishedGoods_3BA7E939886C78DFAD78A24E862733E3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Inventories, net </link:label>
<link:label id="lab_us-gaap_InventoryFinishedGoods_3BA7E939886C78DFAD78A24E862733E3_label_en-US" xlink:label="lab_us-gaap_InventoryFinishedGoods_3BA7E939886C78DFAD78A24E862733E3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Inventory, Finished Goods, Gross </link:label>
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<link:label id="lab_us-gaap_OtherAssetsCurrent_691E53D130EDAB93F1CBA24E8627FADD_terseLabel_en-US" xlink:label="lab_us-gaap_OtherAssetsCurrent_691E53D130EDAB93F1CBA24E8627FADD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other current assets </link:label>
<link:label id="lab_us-gaap_OtherAssetsCurrent_691E53D130EDAB93F1CBA24E8627FADD_label_en-US" xlink:label="lab_us-gaap_OtherAssetsCurrent_691E53D130EDAB93F1CBA24E8627FADD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Assets, Current </link:label>
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<link:label id="lab_us-gaap_AssetsCurrent_4627D77F65C32F42F62BA24E86271FF1_totalLabel_en-US" xlink:label="lab_us-gaap_AssetsCurrent_4627D77F65C32F42F62BA24E86271FF1" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total current assets </link:label>
<link:label id="lab_us-gaap_AssetsCurrent_4627D77F65C32F42F62BA24E86271FF1_label_en-US" xlink:label="lab_us-gaap_AssetsCurrent_4627D77F65C32F42F62BA24E86271FF1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Assets, Current </link:label>
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<link:label id="lab_us-gaap_PropertyPlantAndEquipmentNet_A248E6CF8BEEF22F945DA24E86283ACE_terseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentNet_A248E6CF8BEEF22F945DA24E86283ACE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Property and equipment, net </link:label>
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<link:label id="lab_us-gaap_IntangibleAssetsNetExcludingGoodwill_EE09FD6D37CD35F5F949A24E8628C5CE_terseLabel_en-US" xlink:label="lab_us-gaap_IntangibleAssetsNetExcludingGoodwill_EE09FD6D37CD35F5F949A24E8628C5CE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Intangible assets, net </link:label>
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<link:label id="lab_us-gaap_OtherAssetsNoncurrent_C032064C8993060CFCE6A24E8628A1CD_terseLabel_en-US" xlink:label="lab_us-gaap_OtherAssetsNoncurrent_C032064C8993060CFCE6A24E8628A1CD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other assets </link:label>
<link:label id="lab_us-gaap_OtherAssetsNoncurrent_C032064C8993060CFCE6A24E8628A1CD_label_en-US" xlink:label="lab_us-gaap_OtherAssetsNoncurrent_C032064C8993060CFCE6A24E8628A1CD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Assets, Noncurrent </link:label>
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<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherAssetsNoncurrent_C032064C8993060CFCE6A24E8628A1CD" xlink:to="lab_us-gaap_OtherAssetsNoncurrent_C032064C8993060CFCE6A24E8628A1CD" xlink:type="arc"/>
<link:label id="lab_us-gaap_Assets_F6DBBCDD572431F7C0A8A24E862D433C_totalLabel_en-US" xlink:label="lab_us-gaap_Assets_F6DBBCDD572431F7C0A8A24E862D433C" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total assets </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Assets" xlink:label="loc_us-gaap_Assets_F6DBBCDD572431F7C0A8A24E862D433C" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Assets_F6DBBCDD572431F7C0A8A24E862D433C" xlink:to="lab_us-gaap_Assets_F6DBBCDD572431F7C0A8A24E862D433C" xlink:type="arc"/>
<link:label id="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_34A5CC89AA52296751E0A24E862EFDEE_verboseLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_34A5CC89AA52296751E0A24E862EFDEE" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Liabilities and Stockholders' equity </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_34A5CC89AA52296751E0A24E862EFDEE" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_34A5CC89AA52296751E0A24E862EFDEE" xlink:to="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_34A5CC89AA52296751E0A24E862EFDEE" xlink:type="arc"/>
<link:label id="lab_us-gaap_LiabilitiesCurrentAbstract_B90712E4E462CABAC632A24E862ECC57_terseLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesCurrentAbstract_B90712E4E462CABAC632A24E862ECC57" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Current liabilities: </link:label>
<link:label id="lab_us-gaap_LiabilitiesCurrentAbstract_B90712E4E462CABAC632A24E862ECC57_label_en-US" xlink:label="lab_us-gaap_LiabilitiesCurrentAbstract_B90712E4E462CABAC632A24E862ECC57" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Liabilities, Current [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesCurrentAbstract" xlink:label="loc_us-gaap_LiabilitiesCurrentAbstract_B90712E4E462CABAC632A24E862ECC57" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_B90712E4E462CABAC632A24E862ECC57" xlink:to="lab_us-gaap_LiabilitiesCurrentAbstract_B90712E4E462CABAC632A24E862ECC57" xlink:type="arc"/>
<link:label id="lab_us-gaap_LongTermDebtCurrent_47DFEC2F95846627027AA24E862E2F06_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtCurrent_47DFEC2F95846627027AA24E862E2F06" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Current portion of long-term debt </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtCurrent" xlink:label="loc_us-gaap_LongTermDebtCurrent_47DFEC2F95846627027AA24E862E2F06" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtCurrent_47DFEC2F95846627027AA24E862E2F06" xlink:to="lab_us-gaap_LongTermDebtCurrent_47DFEC2F95846627027AA24E862E2F06" xlink:type="arc"/>
<link:label id="lab_us-gaap_AccountsPayableCurrent_4D857CF8D20DD24A4AC1A24E862E06C1_terseLabel_en-US" xlink:label="lab_us-gaap_AccountsPayableCurrent_4D857CF8D20DD24A4AC1A24E862E06C1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accounts payable </link:label>
<link:label id="lab_us-gaap_AccountsPayableCurrent_4D857CF8D20DD24A4AC1A24E862E06C1_label_en-US" xlink:label="lab_us-gaap_AccountsPayableCurrent_4D857CF8D20DD24A4AC1A24E862E06C1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accounts Payable, Current </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccountsPayableCurrent" xlink:label="loc_us-gaap_AccountsPayableCurrent_4D857CF8D20DD24A4AC1A24E862E06C1" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountsPayableCurrent_4D857CF8D20DD24A4AC1A24E862E06C1" xlink:to="lab_us-gaap_AccountsPayableCurrent_4D857CF8D20DD24A4AC1A24E862E06C1" xlink:type="arc"/>
<link:label id="lab_us-gaap_AccruedLiabilitiesAndOtherLiabilities_7D9CA75E71A594F6C81BA24E862F4283_terseLabel_en-US" xlink:label="lab_us-gaap_AccruedLiabilitiesAndOtherLiabilities_7D9CA75E71A594F6C81BA24E862F4283" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accrued expenses and other current liabilities </link:label>
<link:label id="lab_us-gaap_AccruedLiabilitiesAndOtherLiabilities_7D9CA75E71A594F6C81BA24E862F4283_label_en-US" xlink:label="lab_us-gaap_AccruedLiabilitiesAndOtherLiabilities_7D9CA75E71A594F6C81BA24E862F4283" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accrued Liabilities and Other Liabilities </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccruedLiabilitiesAndOtherLiabilities" xlink:label="loc_us-gaap_AccruedLiabilitiesAndOtherLiabilities_7D9CA75E71A594F6C81BA24E862F4283" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccruedLiabilitiesAndOtherLiabilities_7D9CA75E71A594F6C81BA24E862F4283" xlink:to="lab_us-gaap_AccruedLiabilitiesAndOtherLiabilities_7D9CA75E71A594F6C81BA24E862F4283" xlink:type="arc"/>
<link:label id="lab_us-gaap_DividendsPayableCurrent_DFBF673D7D61DDBE1096A24E862FE340_terseLabel_en-US" xlink:label="lab_us-gaap_DividendsPayableCurrent_DFBF673D7D61DDBE1096A24E862FE340" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Dividends payable </link:label>
<link:label id="lab_us-gaap_DividendsPayableCurrent_DFBF673D7D61DDBE1096A24E862FE340_label_en-US" xlink:label="lab_us-gaap_DividendsPayableCurrent_DFBF673D7D61DDBE1096A24E862FE340" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Dividends Payable, Current </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DividendsPayableCurrent" xlink:label="loc_us-gaap_DividendsPayableCurrent_DFBF673D7D61DDBE1096A24E862FE340" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DividendsPayableCurrent_DFBF673D7D61DDBE1096A24E862FE340" xlink:to="lab_us-gaap_DividendsPayableCurrent_DFBF673D7D61DDBE1096A24E862FE340" xlink:type="arc"/>
<link:label id="lab_us-gaap_LiabilitiesCurrent_99AB4EAB3385D5494F81A24E862F1921_totalLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesCurrent_99AB4EAB3385D5494F81A24E862F1921" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total current liabilities </link:label>
<link:label id="lab_us-gaap_LiabilitiesCurrent_99AB4EAB3385D5494F81A24E862F1921_label_en-US" xlink:label="lab_us-gaap_LiabilitiesCurrent_99AB4EAB3385D5494F81A24E862F1921" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Liabilities, Current </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:label="loc_us-gaap_LiabilitiesCurrent_99AB4EAB3385D5494F81A24E862F1921" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesCurrent_99AB4EAB3385D5494F81A24E862F1921" xlink:to="lab_us-gaap_LiabilitiesCurrent_99AB4EAB3385D5494F81A24E862F1921" xlink:type="arc"/>
<link:label id="lab_us-gaap_DeferredCompensationLiabilityClassifiedNoncurrent_A3B2AA4E0CE22F404F0FA24E862FF195_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredCompensationLiabilityClassifiedNoncurrent_A3B2AA4E0CE22F404F0FA24E862FF195" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Deferred compensation </link:label>
<link:label id="lab_us-gaap_DeferredCompensationLiabilityClassifiedNoncurrent_A3B2AA4E0CE22F404F0FA24E862FF195_label_en-US" xlink:label="lab_us-gaap_DeferredCompensationLiabilityClassifiedNoncurrent_A3B2AA4E0CE22F404F0FA24E862FF195" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Deferred Compensation Liability, Classified, Noncurrent </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredCompensationLiabilityClassifiedNoncurrent" xlink:label="loc_us-gaap_DeferredCompensationLiabilityClassifiedNoncurrent_A3B2AA4E0CE22F404F0FA24E862FF195" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DeferredCompensationLiabilityClassifiedNoncurrent_A3B2AA4E0CE22F404F0FA24E862FF195" xlink:to="lab_us-gaap_DeferredCompensationLiabilityClassifiedNoncurrent_A3B2AA4E0CE22F404F0FA24E862FF195" xlink:type="arc"/>
<link:label id="lab_vsec_LongTermLeaseObligations_1EAF5F04D042986395D8A24E863030B3_terseLabel_en-US" xlink:label="lab_vsec_LongTermLeaseObligations_1EAF5F04D042986395D8A24E863030B3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Long-term lease obligations, less current portion </link:label>
<link:label id="lab_vsec_LongTermLeaseObligations_1EAF5F04D042986395D8A24E863030B3_label_en-US" xlink:label="lab_vsec_LongTermLeaseObligations_1EAF5F04D042986395D8A24E863030B3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Long Term Lease Obligations </link:label>
<link:label id="lab_vsec_LongTermLeaseObligations_1EAF5F04D042986395D8A24E863030B3_documentation_en-US" xlink:label="lab_vsec_LongTermLeaseObligations_1EAF5F04D042986395D8A24E863030B3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Represents the long-term liabilities associated with obligations on current leasing arrangements whereby such obligations are expected to be paid after one year. </link:label>
<link:loc xlink:href="vsec-20191231.xsd#vsec_LongTermLeaseObligations" xlink:label="loc_vsec_LongTermLeaseObligations_1EAF5F04D042986395D8A24E863030B3" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_vsec_LongTermLeaseObligations_1EAF5F04D042986395D8A24E863030B3" xlink:to="lab_vsec_LongTermLeaseObligations_1EAF5F04D042986395D8A24E863030B3" xlink:type="arc"/>
<link:label id="lab_vsec_LongtermLeaseObligationsUnderOperatingLeases_C3FC0FF5AF2B6D1319C9A24E863038A6_terseLabel_en-US" xlink:label="lab_vsec_LongtermLeaseObligationsUnderOperatingLeases_C3FC0FF5AF2B6D1319C9A24E863038A6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Long-term lease obligations under operating leases </link:label>
<link:label id="lab_vsec_LongtermLeaseObligationsUnderOperatingLeases_C3FC0FF5AF2B6D1319C9A24E863038A6_label_en-US" xlink:label="lab_vsec_LongtermLeaseObligationsUnderOperatingLeases_C3FC0FF5AF2B6D1319C9A24E863038A6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Long-term Lease Obligations Under Operating Leases </link:label>
<link:label id="lab_vsec_LongtermLeaseObligationsUnderOperatingLeases_C3FC0FF5AF2B6D1319C9A24E863038A6_documentation_en-US" xlink:label="lab_vsec_LongtermLeaseObligationsUnderOperatingLeases_C3FC0FF5AF2B6D1319C9A24E863038A6" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Long-term lease obligations under operating leases </link:label>
<link:loc xlink:href="vsec-20191231.xsd#vsec_LongtermLeaseObligationsUnderOperatingLeases" xlink:label="loc_vsec_LongtermLeaseObligationsUnderOperatingLeases_C3FC0FF5AF2B6D1319C9A24E863038A6" xlink:type="locator"/>
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<link:label id="lab_vsec_EarnOutObligationsFairValueDisclosure_F6A708CA8B241667CEC1A24E8630F8D1_terseLabel_en-US" xlink:label="lab_vsec_EarnOutObligationsFairValueDisclosure_F6A708CA8B241667CEC1A24E8630F8D1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Earn-out obligations, less current portion </link:label>
<link:loc xlink:href="vsec-20191231.xsd#vsec_EarnOutObligationsFairValueDisclosure" xlink:label="loc_vsec_EarnOutObligationsFairValueDisclosure_F6A708CA8B241667CEC1A24E8630F8D1" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_vsec_EarnOutObligationsFairValueDisclosure_F6A708CA8B241667CEC1A24E8630F8D1" xlink:to="lab_vsec_EarnOutObligationsFairValueDisclosure_F6A708CA8B241667CEC1A24E8630F8D1" xlink:type="arc"/>
<link:label id="lab_us-gaap_DeferredIncomeTaxLiabilitiesNet_0B1A7234FF75A8AD7F04A24E8630F0F0_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredIncomeTaxLiabilitiesNet_0B1A7234FF75A8AD7F04A24E8630F0F0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Deferred tax liabilities </link:label>
<link:label id="lab_us-gaap_DeferredIncomeTaxLiabilitiesNet_0B1A7234FF75A8AD7F04A24E8630F0F0_label_en-US" xlink:label="lab_us-gaap_DeferredIncomeTaxLiabilitiesNet_0B1A7234FF75A8AD7F04A24E8630F0F0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Deferred Income Tax Liabilities, Net </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredIncomeTaxLiabilitiesNet" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_0B1A7234FF75A8AD7F04A24E8630F0F0" xlink:type="locator"/>
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<link:label id="lab_us-gaap_Liabilities_744F5AE55E2749D217DFA24E8630ECB6_totalLabel_en-US" xlink:label="lab_us-gaap_Liabilities_744F5AE55E2749D217DFA24E8630ECB6" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total liabilities </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Liabilities" xlink:label="loc_us-gaap_Liabilities_744F5AE55E2749D217DFA24E8630ECB6" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Liabilities_744F5AE55E2749D217DFA24E8630ECB6" xlink:to="lab_us-gaap_Liabilities_744F5AE55E2749D217DFA24E8630ECB6" xlink:type="arc"/>
<link:label id="lab_us-gaap_CommitmentsAndContingencies_03A165860EF36125F3E5A24E86306627_terseLabel_en-US" xlink:label="lab_us-gaap_CommitmentsAndContingencies_03A165860EF36125F3E5A24E86306627" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Commitments and contingencies (Note 12) </link:label>
<link:label id="lab_us-gaap_CommitmentsAndContingencies_03A165860EF36125F3E5A24E86306627_label_en-US" xlink:label="lab_us-gaap_CommitmentsAndContingencies_03A165860EF36125F3E5A24E86306627" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Commitments and Contingencies </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommitmentsAndContingencies" xlink:label="loc_us-gaap_CommitmentsAndContingencies_03A165860EF36125F3E5A24E86306627" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommitmentsAndContingencies_03A165860EF36125F3E5A24E86306627" xlink:to="lab_us-gaap_CommitmentsAndContingencies_03A165860EF36125F3E5A24E86306627" xlink:type="arc"/>
<link:label id="lab_us-gaap_CommonStockValue_579AE555A51891615874A24E8631093F_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockValue_579AE555A51891615874A24E8631093F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Common stock, par value $0.05 per share, authorized 15,000,000 shares; issued and outstanding 10,970,123 and 10,886,036 respectively </link:label>
<link:label id="lab_us-gaap_CommonStockValue_579AE555A51891615874A24E8631093F_label_en-US" xlink:label="lab_us-gaap_CommonStockValue_579AE555A51891615874A24E8631093F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Common Stock, Value, Issued </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockValue" xlink:label="loc_us-gaap_CommonStockValue_579AE555A51891615874A24E8631093F" xlink:type="locator"/>
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<link:label id="lab_us-gaap_AdditionalPaidInCapitalCommonStock_E207B8605EF02421324FA24E8631D658_terseLabel_en-US" xlink:label="lab_us-gaap_AdditionalPaidInCapitalCommonStock_E207B8605EF02421324FA24E8631D658" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Additional paid-in capital </link:label>
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<link:label id="lab_vsec_JosephWaggonervVSEreOvertimeCompensationMember_6EEE1F31FA5BBDFF272B74ED91DB278F_terseLabel_en-US" xlink:label="lab_vsec_JosephWaggonervVSEreOvertimeCompensationMember_6EEE1F31FA5BBDFF272B74ED91DB278F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Joseph Waggoner v VSE re Overtime Compensation </link:label>
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<link:label id="lab_us-gaap_LossContingenciesLineItems_2FD9409209D29E1F4E7C74ED91DCFD4A_terseLabel_en-US" xlink:label="lab_us-gaap_LossContingenciesLineItems_2FD9409209D29E1F4E7C74ED91DCFD4A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Loss Contingencies [Line Items] </link:label>
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<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LossContingenciesLineItems" xlink:label="loc_us-gaap_LossContingenciesLineItems_2FD9409209D29E1F4E7C74ED91DCFD4A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LossContingenciesLineItems_2FD9409209D29E1F4E7C74ED91DCFD4A" xlink:to="lab_us-gaap_LossContingenciesLineItems_2FD9409209D29E1F4E7C74ED91DCFD4A" xlink:type="arc"/>
<link:label id="lab_vsec_TermOfLease_E53613E44D0916C5130574ED91DC9148_terseLabel_en-US" xlink:label="lab_vsec_TermOfLease_E53613E44D0916C5130574ED91DC9148" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Lease term </link:label>
<link:label id="lab_vsec_TermOfLease_E53613E44D0916C5130574ED91DC9148_label_en-US" xlink:label="lab_vsec_TermOfLease_E53613E44D0916C5130574ED91DC9148" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Term of Lease </link:label>
<link:label id="lab_vsec_TermOfLease_E53613E44D0916C5130574ED91DC9148_documentation_en-US" xlink:label="lab_vsec_TermOfLease_E53613E44D0916C5130574ED91DC9148" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> The length of time the entity is under obligation to lease the asset. </link:label>
<link:loc xlink:href="vsec-20191231.xsd#vsec_TermOfLease" xlink:label="loc_vsec_TermOfLease_E53613E44D0916C5130574ED91DC9148" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_vsec_TermOfLease_E53613E44D0916C5130574ED91DC9148" xlink:to="lab_vsec_TermOfLease_E53613E44D0916C5130574ED91DC9148" xlink:type="arc"/>
<link:label id="lab_us-gaap_OperatingLeasesRentExpenseSubleaseRentals1_DA2A0DE32E5AF2AD052974ED91DDF367_verboseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesRentExpenseSubleaseRentals1_DA2A0DE32E5AF2AD052974ED91DDF367" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Sublease rentals </link:label>
<link:label id="lab_us-gaap_OperatingLeasesRentExpenseSubleaseRentals1_DA2A0DE32E5AF2AD052974ED91DDF367_label_en-US" xlink:label="lab_us-gaap_OperatingLeasesRentExpenseSubleaseRentals1_DA2A0DE32E5AF2AD052974ED91DDF367" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Leases, Rent Expense, Sublease Rentals </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeasesRentExpenseSubleaseRentals1" xlink:label="loc_us-gaap_OperatingLeasesRentExpenseSubleaseRentals1_DA2A0DE32E5AF2AD052974ED91DDF367" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeasesRentExpenseSubleaseRentals1_DA2A0DE32E5AF2AD052974ED91DDF367" xlink:to="lab_us-gaap_OperatingLeasesRentExpenseSubleaseRentals1_DA2A0DE32E5AF2AD052974ED91DDF367" xlink:type="arc"/>
<link:label id="lab_us-gaap_OperatingLeasePayments_98ABF89A7C494470600974ED91DD0EAC_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasePayments_98ABF89A7C494470600974ED91DD0EAC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Cash payments </link:label>
<link:label id="lab_us-gaap_OperatingLeasePayments_98ABF89A7C494470600974ED91DD0EAC_label_en-US" xlink:label="lab_us-gaap_OperatingLeasePayments_98ABF89A7C494470600974ED91DD0EAC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Lease, Payments </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeasePayments" xlink:label="loc_us-gaap_OperatingLeasePayments_98ABF89A7C494470600974ED91DD0EAC" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeasePayments_98ABF89A7C494470600974ED91DD0EAC" xlink:to="lab_us-gaap_OperatingLeasePayments_98ABF89A7C494470600974ED91DD0EAC" xlink:type="arc"/>
<link:label id="lab_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_58721207A8C9298C749974ED91DD8113_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_58721207A8C9298C749974ED91DD8113" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Weighted average remaining lease term </link:label>
<link:label id="lab_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_58721207A8C9298C749974ED91DD8113_label_en-US" xlink:label="lab_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_58721207A8C9298C749974ED91DD8113" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Lease, Weighted Average Remaining Lease Term </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1" xlink:label="loc_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_58721207A8C9298C749974ED91DD8113" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_58721207A8C9298C749974ED91DD8113" xlink:to="lab_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_58721207A8C9298C749974ED91DD8113" xlink:type="arc"/>
<link:label id="lab_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_57190A9902F1EC090D4974ED91DDE138_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_57190A9902F1EC090D4974ED91DDE138" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Weighted average discount rate, percent </link:label>
<link:label id="lab_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_57190A9902F1EC090D4974ED91DDE138_label_en-US" xlink:label="lab_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_57190A9902F1EC090D4974ED91DDE138" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Lease, Weighted Average Discount Rate, Percent </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent" xlink:label="loc_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_57190A9902F1EC090D4974ED91DDE138" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_57190A9902F1EC090D4974ED91DDE138" xlink:to="lab_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_57190A9902F1EC090D4974ED91DDE138" xlink:type="arc"/>
<link:label id="lab_vsec_LossContingencyNumberofSubcontractors_B1ACF17F55071EAD9E7374ED91DD6615_terseLabel_en-US" xlink:label="lab_vsec_LossContingencyNumberofSubcontractors_B1ACF17F55071EAD9E7374ED91DD6615" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Number of subcontractors named in lawsuit </link:label>
<link:label id="lab_vsec_LossContingencyNumberofSubcontractors_B1ACF17F55071EAD9E7374ED91DD6615_label_en-US" xlink:label="lab_vsec_LossContingencyNumberofSubcontractors_B1ACF17F55071EAD9E7374ED91DD6615" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Loss Contingency, Number of Subcontractors </link:label>
<link:label id="lab_vsec_LossContingencyNumberofSubcontractors_B1ACF17F55071EAD9E7374ED91DD6615_documentation_en-US" xlink:label="lab_vsec_LossContingencyNumberofSubcontractors_B1ACF17F55071EAD9E7374ED91DD6615" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Loss Contingency, Number of Subcontractors </link:label>
<link:loc xlink:href="vsec-20191231.xsd#vsec_LossContingencyNumberofSubcontractors" xlink:label="loc_vsec_LossContingencyNumberofSubcontractors_B1ACF17F55071EAD9E7374ED91DD6615" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_vsec_LossContingencyNumberofSubcontractors_B1ACF17F55071EAD9E7374ED91DD6615" xlink:to="lab_vsec_LossContingencyNumberofSubcontractors_B1ACF17F55071EAD9E7374ED91DD6615" xlink:type="arc"/>
<link:label id="lab_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_2ADA315DD66273986A63A24E85DFFAFC_label_en-US" xlink:label="lab_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_2ADA315DD66273986A63A24E85DFFAFC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Statement of Comprehensive Income [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract" xlink:label="loc_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_2ADA315DD66273986A63A24E85DFFAFC" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_2ADA315DD66273986A63A24E85DFFAFC" xlink:to="lab_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_2ADA315DD66273986A63A24E85DFFAFC" xlink:type="arc"/>
<link:label id="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTax_823A18CAE50961088109A24E85E07C5E_totalLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTax_823A18CAE50961088109A24E85E07C5E" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Other comprehensive (loss) income, net of tax </link:label>
<link:label id="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTax_823A18CAE50961088109A24E85E07C5E_label_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTax_823A18CAE50961088109A24E85E07C5E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Comprehensive Income (Loss), Net of Tax </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_823A18CAE50961088109A24E85E07C5E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_823A18CAE50961088109A24E85E07C5E" xlink:to="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTax_823A18CAE50961088109A24E85E07C5E" xlink:type="arc"/>
<link:label id="lab_us-gaap_ComprehensiveIncomeNetOfTax_6444E6CE650489D1F5E0A24E85E021FD_totalLabel_en-US" xlink:label="lab_us-gaap_ComprehensiveIncomeNetOfTax_6444E6CE650489D1F5E0A24E85E021FD" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Comprehensive income </link:label>
<link:label id="lab_us-gaap_ComprehensiveIncomeNetOfTax_6444E6CE650489D1F5E0A24E85E021FD_label_en-US" xlink:label="lab_us-gaap_ComprehensiveIncomeNetOfTax_6444E6CE650489D1F5E0A24E85E021FD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Comprehensive Income (Loss), Net of Tax, Attributable to Parent </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTax" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_6444E6CE650489D1F5E0A24E85E021FD" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_6444E6CE650489D1F5E0A24E85E021FD" xlink:to="lab_us-gaap_ComprehensiveIncomeNetOfTax_6444E6CE650489D1F5E0A24E85E021FD" xlink:type="arc"/>
<link:label id="lab_us-gaap_OperatingLeaseCost_F190DBEA93FE7D9953B17589F334F099_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeaseCost_F190DBEA93FE7D9953B17589F334F099" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Operating lease cost </link:label>
<link:label id="lab_us-gaap_OperatingLeaseCost_F190DBEA93FE7D9953B17589F334F099_label_en-US" xlink:label="lab_us-gaap_OperatingLeaseCost_F190DBEA93FE7D9953B17589F334F099" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Lease, Cost </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeaseCost" xlink:label="loc_us-gaap_OperatingLeaseCost_F190DBEA93FE7D9953B17589F334F099" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeaseCost_F190DBEA93FE7D9953B17589F334F099" xlink:to="lab_us-gaap_OperatingLeaseCost_F190DBEA93FE7D9953B17589F334F099" xlink:type="arc"/>
<link:label id="lab_us-gaap_ShortTermLeaseCost_E3DD50A6B41762CE814D7589F334EF38_terseLabel_en-US" xlink:label="lab_us-gaap_ShortTermLeaseCost_E3DD50A6B41762CE814D7589F334EF38" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Short-term lease cost </link:label>
<link:label id="lab_us-gaap_ShortTermLeaseCost_E3DD50A6B41762CE814D7589F334EF38_label_en-US" xlink:label="lab_us-gaap_ShortTermLeaseCost_E3DD50A6B41762CE814D7589F334EF38" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Short-term Lease, Cost </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShortTermLeaseCost" xlink:label="loc_us-gaap_ShortTermLeaseCost_E3DD50A6B41762CE814D7589F334EF38" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShortTermLeaseCost_E3DD50A6B41762CE814D7589F334EF38" xlink:to="lab_us-gaap_ShortTermLeaseCost_E3DD50A6B41762CE814D7589F334EF38" xlink:type="arc"/>
<link:label id="lab_us-gaap_SubleaseIncome_A19D8F0126C6E9F12A0C7589F3345AE2_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_SubleaseIncome_A19D8F0126C6E9F12A0C7589F3345AE2" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Less: sublease income </link:label>
<link:label id="lab_us-gaap_SubleaseIncome_A19D8F0126C6E9F12A0C7589F3345AE2_label_en-US" xlink:label="lab_us-gaap_SubleaseIncome_A19D8F0126C6E9F12A0C7589F3345AE2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Sublease Income </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SubleaseIncome" xlink:label="loc_us-gaap_SubleaseIncome_A19D8F0126C6E9F12A0C7589F3345AE2" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SubleaseIncome_A19D8F0126C6E9F12A0C7589F3345AE2" xlink:to="lab_us-gaap_SubleaseIncome_A19D8F0126C6E9F12A0C7589F3345AE2" xlink:type="arc"/>
<link:label id="lab_us-gaap_LeaseCost_B9F9495A1C51F835F0397589F334F216_totalLabel_en-US" xlink:label="lab_us-gaap_LeaseCost_B9F9495A1C51F835F0397589F334F216" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total lease cost, net </link:label>
<link:label id="lab_us-gaap_LeaseCost_B9F9495A1C51F835F0397589F334F216_label_en-US" xlink:label="lab_us-gaap_LeaseCost_B9F9495A1C51F835F0397589F334F216" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lease, Cost </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LeaseCost" xlink:label="loc_us-gaap_LeaseCost_B9F9495A1C51F835F0397589F334F216" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LeaseCost_B9F9495A1C51F835F0397589F334F216" xlink:to="lab_us-gaap_LeaseCost_B9F9495A1C51F835F0397589F334F216" xlink:type="arc"/>
<link:label id="lab_us-gaap_DebtDisclosureTextBlock_F7C42EE412DA198E7F3242ED89FDE13C_verboseLabel_en-US" xlink:label="lab_us-gaap_DebtDisclosureTextBlock_F7C42EE412DA198E7F3242ED89FDE13C" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Debt </link:label>
<link:label id="lab_us-gaap_DebtDisclosureTextBlock_F7C42EE412DA198E7F3242ED89FDE13C_label_en-US" xlink:label="lab_us-gaap_DebtDisclosureTextBlock_F7C42EE412DA198E7F3242ED89FDE13C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Disclosure [Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtDisclosureTextBlock" xlink:label="loc_us-gaap_DebtDisclosureTextBlock_F7C42EE412DA198E7F3242ED89FDE13C" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtDisclosureTextBlock_F7C42EE412DA198E7F3242ED89FDE13C" xlink:to="lab_us-gaap_DebtDisclosureTextBlock_F7C42EE412DA198E7F3242ED89FDE13C" xlink:type="arc"/>
<link:label id="lab_us-gaap_CompensationAndEmployeeBenefitPlansTextBlock_19410BD2991BF649A80F42ED894BA633_verboseLabel_en-US" xlink:label="lab_us-gaap_CompensationAndEmployeeBenefitPlansTextBlock_19410BD2991BF649A80F42ED894BA633" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> 401(k) Plan </link:label>
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<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate" xlink:label="loc_us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate_A49A492DED1200069806BFA8C6014F46" xlink:type="locator"/>
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<link:label id="lab_vsec_IncreasesDecreasesInTaxResultingFromAbstract_30E55D9BF371F08711CABFA8C6010B15_label_en-US" xlink:label="lab_vsec_IncreasesDecreasesInTaxResultingFromAbstract_30E55D9BF371F08711CABFA8C6010B15" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Increases (decreases) in tax resulting from: [Abstract] </link:label>
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<link:label id="lab_us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes_999D6BC3C6D0785240DBBFA8C6019941_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes_999D6BC3C6D0785240DBBFA8C6019941" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> State taxes, net of federal tax benefit </link:label>
<link:label id="lab_us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes_999D6BC3C6D0785240DBBFA8C6019941_label_en-US" xlink:label="lab_us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes_999D6BC3C6D0785240DBBFA8C6019941" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount </link:label>
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<link:label id="lab_vsec_EffectiveIncomeTaxRateReconciliationPermanentDifferencesAmount_AA6EC7E42E91DF037DBABFA8C601FC19_terseLabel_en-US" xlink:label="lab_vsec_EffectiveIncomeTaxRateReconciliationPermanentDifferencesAmount_AA6EC7E42E91DF037DBABFA8C601FC19" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Permanent differences, net </link:label>
<link:label id="lab_vsec_EffectiveIncomeTaxRateReconciliationPermanentDifferencesAmount_AA6EC7E42E91DF037DBABFA8C601FC19_label_en-US" xlink:label="lab_vsec_EffectiveIncomeTaxRateReconciliationPermanentDifferencesAmount_AA6EC7E42E91DF037DBABFA8C601FC19" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Effective Income Tax Rate Reconciliation, Permanent Differences, Amount </link:label>
<link:label id="lab_vsec_EffectiveIncomeTaxRateReconciliationPermanentDifferencesAmount_AA6EC7E42E91DF037DBABFA8C601FC19_documentation_en-US" xlink:label="lab_vsec_EffectiveIncomeTaxRateReconciliationPermanentDifferencesAmount_AA6EC7E42E91DF037DBABFA8C601FC19" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Effective Income Tax Rate Reconciliation, Permanent Differences, Amount </link:label>
<link:loc xlink:href="vsec-20191231.xsd#vsec_EffectiveIncomeTaxRateReconciliationPermanentDifferencesAmount" xlink:label="loc_vsec_EffectiveIncomeTaxRateReconciliationPermanentDifferencesAmount_AA6EC7E42E91DF037DBABFA8C601FC19" xlink:type="locator"/>
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<link:label id="lab_us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate_4570FEE5FD50591759E9BFA8C601D49C_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate_4570FEE5FD50591759E9BFA8C601D49C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Impact of Tax Act </link:label>
<link:label id="lab_us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate_4570FEE5FD50591759E9BFA8C601D49C_label_en-US" xlink:label="lab_us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate_4570FEE5FD50591759E9BFA8C601D49C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate" xlink:label="loc_us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate_4570FEE5FD50591759E9BFA8C601D49C" xlink:type="locator"/>
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<link:label id="lab_us-gaap_IncomeTaxReconciliationTaxCredits_06473F6E1FA1AB70FD5EBFA8C6060110_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxReconciliationTaxCredits_06473F6E1FA1AB70FD5EBFA8C6060110" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Tax credits </link:label>
<link:label id="lab_us-gaap_IncomeTaxReconciliationTaxCredits_06473F6E1FA1AB70FD5EBFA8C6060110_label_en-US" xlink:label="lab_us-gaap_IncomeTaxReconciliationTaxCredits_06473F6E1FA1AB70FD5EBFA8C6060110" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Effective Income Tax Rate Reconciliation, Tax Credit, Amount </link:label>
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<link:label id="lab_vsec_EffectiveIncomeTaxRateReconciliationPriorYearTrueUpAdjustmentAmount_D530C34877452D045845BFA8C606800D_negatedTerseLabel_en-US" xlink:label="lab_vsec_EffectiveIncomeTaxRateReconciliationPriorYearTrueUpAdjustmentAmount_D530C34877452D045845BFA8C606800D" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Prior year true-up adjustment </link:label>
<link:label id="lab_vsec_EffectiveIncomeTaxRateReconciliationPriorYearTrueUpAdjustmentAmount_D530C34877452D045845BFA8C606800D_label_en-US" xlink:label="lab_vsec_EffectiveIncomeTaxRateReconciliationPriorYearTrueUpAdjustmentAmount_D530C34877452D045845BFA8C606800D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Effective Income Tax Rate Reconciliation, Prior Year True-Up Adjustment, Amount </link:label>
<link:label id="lab_vsec_EffectiveIncomeTaxRateReconciliationPriorYearTrueUpAdjustmentAmount_D530C34877452D045845BFA8C606800D_documentation_en-US" xlink:label="lab_vsec_EffectiveIncomeTaxRateReconciliationPriorYearTrueUpAdjustmentAmount_D530C34877452D045845BFA8C606800D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Effective Income Tax Rate Reconciliation, Prior Year True-Up Adjustment, Amount </link:label>
<link:loc xlink:href="vsec-20191231.xsd#vsec_EffectiveIncomeTaxRateReconciliationPriorYearTrueUpAdjustmentAmount" xlink:label="loc_vsec_EffectiveIncomeTaxRateReconciliationPriorYearTrueUpAdjustmentAmount_D530C34877452D045845BFA8C606800D" xlink:type="locator"/>
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<link:label id="lab_us-gaap_IncomeTaxReconciliationTaxCreditsOther_C3877A9E5C6F98475C56BFA8C606B1ED_negatedLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxReconciliationTaxCreditsOther_C3877A9E5C6F98475C56BFA8C606B1ED" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Other provision adjustments </link:label>
<link:label id="lab_us-gaap_IncomeTaxReconciliationTaxCreditsOther_C3877A9E5C6F98475C56BFA8C606B1ED_label_en-US" xlink:label="lab_us-gaap_IncomeTaxReconciliationTaxCreditsOther_C3877A9E5C6F98475C56BFA8C606B1ED" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Effective Income Tax Rate Reconciliation, Tax Credit, Other, Amount </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeTaxReconciliationTaxCreditsOther" xlink:label="loc_us-gaap_IncomeTaxReconciliationTaxCreditsOther_C3877A9E5C6F98475C56BFA8C606B1ED" xlink:type="locator"/>
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<link:label id="lab_vsec_TaxEffectOfTemporaryDifferencesAbstract_59DC7039236061E3FD5ABFA8C60613C2_terseLabel_en-US" xlink:label="lab_vsec_TaxEffectOfTemporaryDifferencesAbstract_59DC7039236061E3FD5ABFA8C60613C2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Tax Effect of Temporary Differences [Abstract] </link:label>
<link:label id="lab_vsec_TaxEffectOfTemporaryDifferencesAbstract_59DC7039236061E3FD5ABFA8C60613C2_label_en-US" xlink:label="lab_vsec_TaxEffectOfTemporaryDifferencesAbstract_59DC7039236061E3FD5ABFA8C60613C2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Tax Effect of Temporary Differences [Abstract] </link:label>
<link:label id="lab_vsec_TaxEffectOfTemporaryDifferencesAbstract_59DC7039236061E3FD5ABFA8C60613C2_documentation_en-US" xlink:label="lab_vsec_TaxEffectOfTemporaryDifferencesAbstract_59DC7039236061E3FD5ABFA8C60613C2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"/>
<link:loc xlink:href="vsec-20191231.xsd#vsec_TaxEffectOfTemporaryDifferencesAbstract" xlink:label="loc_vsec_TaxEffectOfTemporaryDifferencesAbstract_59DC7039236061E3FD5ABFA8C60613C2" xlink:type="locator"/>
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<link:label id="lab_us-gaap_DeferredTaxAssetsGrossAbstract_10ADB7652AAFA0D4A55CBFA8C6065D7F_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredTaxAssetsGrossAbstract_10ADB7652AAFA0D4A55CBFA8C6065D7F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Gross deferred tax assets </link:label>
<link:label id="lab_us-gaap_DeferredTaxAssetsGrossAbstract_10ADB7652AAFA0D4A55CBFA8C6065D7F_label_en-US" xlink:label="lab_us-gaap_DeferredTaxAssetsGrossAbstract_10ADB7652AAFA0D4A55CBFA8C6065D7F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Deferred Tax Assets, Gross [Abstract] </link:label>
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<link:label id="lab_us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsCompensatedAbsences_3F4C23FB25CA0936ECABBFA8C6061C19_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsCompensatedAbsences_3F4C23FB25CA0936ECABBFA8C6061C19" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Deferred compensation and accrued paid leave </link:label>
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<link:label id="lab_us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities_9D87C661EB9523632B45BFA8C606538B_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities_9D87C661EB9523632B45BFA8C606538B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accrued expenses </link:label>
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<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities_9D87C661EB9523632B45BFA8C606538B" xlink:type="locator"/>
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<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Goodwill" xlink:label="loc_us-gaap_Goodwill_4724FCE0EDBFDBC08FD2A5FB920FD92E" xlink:type="locator"/>
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<link:label id="lab_us-gaap_AmortizationOfIntangibleAssets_5B9B1B5DA888AA8AC63BA5FB920FEB9A_terseLabel_en-US" xlink:label="lab_us-gaap_AmortizationOfIntangibleAssets_5B9B1B5DA888AA8AC63BA5FB920FEB9A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Amortization of intangible assets </link:label>
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<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AmortizationOfIntangibleAssets" xlink:label="loc_us-gaap_AmortizationOfIntangibleAssets_5B9B1B5DA888AA8AC63BA5FB920FEB9A" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_F7310B273D66AE83DC93A5FB9210FA95_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_F7310B273D66AE83DC93A5FB9210FA95" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Schedule of Finite-Lived Intangible Assets [Table] </link:label>
<link:label id="lab_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_F7310B273D66AE83DC93A5FB9210FA95_label_en-US" xlink:label="lab_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_F7310B273D66AE83DC93A5FB9210FA95" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Schedule of Finite-Lived Intangible Assets [Table] </link:label>
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<link:label id="lab_us-gaap_ContractualRightsMember_03EB798DE75177CE8012A5FB9210C591_terseLabel_en-US" xlink:label="lab_us-gaap_ContractualRightsMember_03EB798DE75177CE8012A5FB9210C591" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Contract and customer-related </link:label>
<link:label id="lab_us-gaap_ContractualRightsMember_03EB798DE75177CE8012A5FB9210C591_label_en-US" xlink:label="lab_us-gaap_ContractualRightsMember_03EB798DE75177CE8012A5FB9210C591" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Contractual Rights [Member] </link:label>
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<link:label id="lab_us-gaap_PatentedTechnologyMember_AEE260B4313024777B4AA5FB921084CD_verboseLabel_en-US" xlink:label="lab_us-gaap_PatentedTechnologyMember_AEE260B4313024777B4AA5FB921084CD" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Acquired technologies </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PatentedTechnologyMember" xlink:label="loc_us-gaap_PatentedTechnologyMember_AEE260B4313024777B4AA5FB921084CD" xlink:type="locator"/>
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<link:label id="lab_us-gaap_TradeNamesMember_CD5BB0CD613416867311A5FB9211F33B_verboseLabel_en-US" xlink:label="lab_us-gaap_TradeNamesMember_CD5BB0CD613416867311A5FB9211F33B" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Trade names </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TradeNamesMember" xlink:label="loc_us-gaap_TradeNamesMember_CD5BB0CD613416867311A5FB9211F33B" xlink:type="locator"/>
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<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsLineItems_E316F0D0A7BD51722EB4A5FB92119CE2_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsLineItems_E316F0D0A7BD51722EB4A5FB92119CE2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Finite-Lived Intangible Assets [Line Items] </link:label>
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<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_E316F0D0A7BD51722EB4A5FB92119CE2" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_E316F0D0A7BD51722EB4A5FB92119CE2" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsLineItems_E316F0D0A7BD51722EB4A5FB92119CE2" xlink:type="arc"/>
<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsGross_759EC3174E589312754CA5FB92115754_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsGross_759EC3174E589312754CA5FB92115754" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Cost </link:label>
<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsGross_759EC3174E589312754CA5FB92115754_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsGross_759EC3174E589312754CA5FB92115754" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Finite-Lived Intangible Assets, Gross </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsGross" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_759EC3174E589312754CA5FB92115754" xlink:type="locator"/>
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<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_BAB7CE684DC16ECDFF27A5FB9211AB61_negatedLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_BAB7CE684DC16ECDFF27A5FB9211AB61" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Accumulated Amortization </link:label>
<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_BAB7CE684DC16ECDFF27A5FB9211AB61_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_BAB7CE684DC16ECDFF27A5FB9211AB61" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Finite-Lived Intangible Assets, Accumulated Amortization </link:label>
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<link:label id="lab_vsec_AccumulatedImpairmentLoss_2C62C1428BD4B996152CA5FB9211DB20_negatedLabel_en-US" xlink:label="lab_vsec_AccumulatedImpairmentLoss_2C62C1428BD4B996152CA5FB9211DB20" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Accumulated Impairment Loss </link:label>
<link:label id="lab_vsec_AccumulatedImpairmentLoss_2C62C1428BD4B996152CA5FB9211DB20_label_en-US" xlink:label="lab_vsec_AccumulatedImpairmentLoss_2C62C1428BD4B996152CA5FB9211DB20" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accumulated Impairment Loss </link:label>
<link:label id="lab_vsec_AccumulatedImpairmentLoss_2C62C1428BD4B996152CA5FB9211DB20_documentation_en-US" xlink:label="lab_vsec_AccumulatedImpairmentLoss_2C62C1428BD4B996152CA5FB9211DB20" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> The accumulated impairment losses related to intangible assets as of the balance sheet date. </link:label>
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<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsNet_29DF96398FCD5FF549FDA5FB921224F3_totalLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsNet_29DF96398FCD5FF549FDA5FB921224F3" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Net Intangible Assets </link:label>
<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsNet_29DF96398FCD5FF549FDA5FB921224F3_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsNet_29DF96398FCD5FF549FDA5FB921224F3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Finite-Lived Intangible Assets, Net </link:label>
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<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_FEEFBE8EBAC8D49AF257A5FB921292BF_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_FEEFBE8EBAC8D49AF257A5FB921292BF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2020 </link:label>
<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_FEEFBE8EBAC8D49AF257A5FB921292BF_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_FEEFBE8EBAC8D49AF257A5FB921292BF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months </link:label>
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<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_9B80600FFB88BD4C4DD5A5FB9212BEFE_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_9B80600FFB88BD4C4DD5A5FB9212BEFE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2021 </link:label>
<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_9B80600FFB88BD4C4DD5A5FB9212BEFE_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_9B80600FFB88BD4C4DD5A5FB9212BEFE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Finite-Lived Intangible Assets, Amortization Expense, Year Two </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_9B80600FFB88BD4C4DD5A5FB9212BEFE" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_9B80600FFB88BD4C4DD5A5FB9212BEFE" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_9B80600FFB88BD4C4DD5A5FB9212BEFE" xlink:type="arc"/>
<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_79A9E14642389078850EA5FB9212BE49_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_79A9E14642389078850EA5FB9212BE49" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2022 </link:label>
<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_79A9E14642389078850EA5FB9212BE49_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_79A9E14642389078850EA5FB9212BE49" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Finite-Lived Intangible Assets, Amortization Expense, Year Three </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_79A9E14642389078850EA5FB9212BE49" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_79A9E14642389078850EA5FB9212BE49" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_79A9E14642389078850EA5FB9212BE49" xlink:type="arc"/>
<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_3FE7395B7685E36F2180A5FB921324E5_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_3FE7395B7685E36F2180A5FB921324E5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2023 </link:label>
<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_3FE7395B7685E36F2180A5FB921324E5_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_3FE7395B7685E36F2180A5FB921324E5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Finite-Lived Intangible Assets, Amortization Expense, Year Four </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_3FE7395B7685E36F2180A5FB921324E5" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_3FE7395B7685E36F2180A5FB921324E5" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_3FE7395B7685E36F2180A5FB921324E5" xlink:type="arc"/>
<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_791CEF643D4E8EF58457A5FB92131B99_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_791CEF643D4E8EF58457A5FB92131B99" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2024 </link:label>
<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_791CEF643D4E8EF58457A5FB92131B99_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_791CEF643D4E8EF58457A5FB92131B99" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Finite-Lived Intangible Assets, Amortization Expense, Year Five </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_791CEF643D4E8EF58457A5FB92131B99" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_791CEF643D4E8EF58457A5FB92131B99" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_791CEF643D4E8EF58457A5FB92131B99" xlink:type="arc"/>
<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_5D42C1987DB13C092093A5FB92130F43_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_5D42C1987DB13C092093A5FB92130F43" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Thereafter </link:label>
<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_5D42C1987DB13C092093A5FB92130F43_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_5D42C1987DB13C092093A5FB92130F43" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Finite-Lived Intangible Assets, Amortization Expense, after Year Five </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_5D42C1987DB13C092093A5FB92130F43" xlink:type="locator"/>
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<link:label id="lab_us-gaap_IncomeStatementAbstract_7A6565F0D2A6EAFBBA15ED940B99BA87_label_en-US" xlink:label="lab_us-gaap_IncomeStatementAbstract_7A6565F0D2A6EAFBBA15ED940B99BA87" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Income Statement [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementAbstract" xlink:label="loc_us-gaap_IncomeStatementAbstract_7A6565F0D2A6EAFBBA15ED940B99BA87" xlink:type="locator"/>
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<link:label id="lab_srt_ProductOrServiceAxis_4835397EDC5E34385B84ED940B997F39_terseLabel_en-US" xlink:label="lab_srt_ProductOrServiceAxis_4835397EDC5E34385B84ED940B997F39" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Product and Service [Axis] </link:label>
<link:label id="lab_srt_ProductOrServiceAxis_4835397EDC5E34385B84ED940B997F39_label_en-US" xlink:label="lab_srt_ProductOrServiceAxis_4835397EDC5E34385B84ED940B997F39" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Product and Service [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ProductOrServiceAxis" xlink:label="loc_srt_ProductOrServiceAxis_4835397EDC5E34385B84ED940B997F39" xlink:type="locator"/>
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<link:label id="lab_srt_ProductsAndServicesDomain_F33D3680D116F39DAFC2ED940B9928E4_terseLabel_en-US" xlink:label="lab_srt_ProductsAndServicesDomain_F33D3680D116F39DAFC2ED940B9928E4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Product and Service [Domain] </link:label>
<link:label id="lab_srt_ProductsAndServicesDomain_F33D3680D116F39DAFC2ED940B9928E4_label_en-US" xlink:label="lab_srt_ProductsAndServicesDomain_F33D3680D116F39DAFC2ED940B9928E4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Product and Service [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ProductsAndServicesDomain" xlink:label="loc_srt_ProductsAndServicesDomain_F33D3680D116F39DAFC2ED940B9928E4" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ProductMember_11BA48F9B766B2AF1F41ED940B9A5E68_terseLabel_en-US" xlink:label="lab_us-gaap_ProductMember_11BA48F9B766B2AF1F41ED940B9A5E68" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Products </link:label>
<link:label id="lab_us-gaap_ProductMember_11BA48F9B766B2AF1F41ED940B9A5E68_label_en-US" xlink:label="lab_us-gaap_ProductMember_11BA48F9B766B2AF1F41ED940B9A5E68" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Product [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProductMember" xlink:label="loc_us-gaap_ProductMember_11BA48F9B766B2AF1F41ED940B9A5E68" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ServiceMember_B94B1BEA887DCF8C8039ED940B9A400D_terseLabel_en-US" xlink:label="lab_us-gaap_ServiceMember_B94B1BEA887DCF8C8039ED940B9A400D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Services </link:label>
<link:label id="lab_us-gaap_ServiceMember_B94B1BEA887DCF8C8039ED940B9A400D_label_en-US" xlink:label="lab_us-gaap_ServiceMember_B94B1BEA887DCF8C8039ED940B9A400D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Service [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ServiceMember" xlink:label="loc_us-gaap_ServiceMember_B94B1BEA887DCF8C8039ED940B9A400D" xlink:type="locator"/>
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<link:label id="lab_us-gaap_CostOfRevenueAbstract_3AC1DF844F554080D97AED940B9A8109_terseLabel_en-US" xlink:label="lab_us-gaap_CostOfRevenueAbstract_3AC1DF844F554080D97AED940B9A8109" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Revenues: </link:label>
<link:label id="lab_us-gaap_CostOfRevenueAbstract_3AC1DF844F554080D97AED940B9A8109_label_en-US" xlink:label="lab_us-gaap_CostOfRevenueAbstract_3AC1DF844F554080D97AED940B9A8109" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Cost of Revenue [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CostOfRevenueAbstract" xlink:label="loc_us-gaap_CostOfRevenueAbstract_3AC1DF844F554080D97AED940B9A8109" xlink:type="locator"/>
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<link:label id="lab_us-gaap_OperatingCostsAndExpensesAbstract_6C4BCFEE4953752CD8FEED940B9B5F9F_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingCostsAndExpensesAbstract_6C4BCFEE4953752CD8FEED940B9B5F9F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Costs and operating expenses: </link:label>
<link:label id="lab_us-gaap_OperatingCostsAndExpensesAbstract_6C4BCFEE4953752CD8FEED940B9B5F9F_label_en-US" xlink:label="lab_us-gaap_OperatingCostsAndExpensesAbstract_6C4BCFEE4953752CD8FEED940B9B5F9F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Costs and Expenses [Abstract] </link:label>
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<link:label id="lab_us-gaap_CostOfGoodsAndServicesSold_804E972DDE20F1596B5FED940B9B83AF_terseLabel_en-US" xlink:label="lab_us-gaap_CostOfGoodsAndServicesSold_804E972DDE20F1596B5FED940B9B83AF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Costs and operating expenses </link:label>
<link:label id="lab_us-gaap_CostOfGoodsAndServicesSold_804E972DDE20F1596B5FED940B9B83AF_label_en-US" xlink:label="lab_us-gaap_CostOfGoodsAndServicesSold_804E972DDE20F1596B5FED940B9B83AF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Cost of Goods and Services Sold </link:label>
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<link:label id="lab_us-gaap_RestrictedStockMember_8D9FB122E0D3344638EDA68D6176F318_terseLabel_en-US" xlink:label="lab_us-gaap_RestrictedStockMember_8D9FB122E0D3344638EDA68D6176F318" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Restricted Stock </link:label>
<link:label id="lab_us-gaap_RestrictedStockMember_8D9FB122E0D3344638EDA68D6176F318_label_en-US" xlink:label="lab_us-gaap_RestrictedStockMember_8D9FB122E0D3344638EDA68D6176F318" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Restricted Stock [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RestrictedStockMember" xlink:label="loc_us-gaap_RestrictedStockMember_8D9FB122E0D3344638EDA68D6176F318" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RestrictedStockMember_8D9FB122E0D3344638EDA68D6176F318" xlink:to="lab_us-gaap_RestrictedStockMember_8D9FB122E0D3344638EDA68D6176F318" xlink:type="arc"/>
<link:label id="lab_srt_TitleOfIndividualAxis_157DD08D28152AA4ABA7A68D61779641_terseLabel_en-US" xlink:label="lab_srt_TitleOfIndividualAxis_157DD08D28152AA4ABA7A68D61779641" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Title of Individual [Axis] </link:label>
<link:label id="lab_srt_TitleOfIndividualAxis_157DD08D28152AA4ABA7A68D61779641_label_en-US" xlink:label="lab_srt_TitleOfIndividualAxis_157DD08D28152AA4ABA7A68D61779641" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Title of Individual [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_TitleOfIndividualAxis" xlink:label="loc_srt_TitleOfIndividualAxis_157DD08D28152AA4ABA7A68D61779641" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_TitleOfIndividualAxis_157DD08D28152AA4ABA7A68D61779641" xlink:to="lab_srt_TitleOfIndividualAxis_157DD08D28152AA4ABA7A68D61779641" xlink:type="arc"/>
<link:label id="lab_srt_TitleOfIndividualWithRelationshipToEntityDomain_176A89BD95C2807BFEAAA68D61777D46_terseLabel_en-US" xlink:label="lab_srt_TitleOfIndividualWithRelationshipToEntityDomain_176A89BD95C2807BFEAAA68D61777D46" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Title of Individual with Relationship to Entity [Domain] </link:label>
<link:label id="lab_srt_TitleOfIndividualWithRelationshipToEntityDomain_176A89BD95C2807BFEAAA68D61777D46_label_en-US" xlink:label="lab_srt_TitleOfIndividualWithRelationshipToEntityDomain_176A89BD95C2807BFEAAA68D61777D46" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Title of Individual [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_TitleOfIndividualWithRelationshipToEntityDomain" xlink:label="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_176A89BD95C2807BFEAAA68D61777D46" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_176A89BD95C2807BFEAAA68D61777D46" xlink:to="lab_srt_TitleOfIndividualWithRelationshipToEntityDomain_176A89BD95C2807BFEAAA68D61777D46" xlink:type="arc"/>
<link:label id="lab_srt_DirectorMember_787D0371D304B82C0168A68D6177C5AD_terseLabel_en-US" xlink:label="lab_srt_DirectorMember_787D0371D304B82C0168A68D6177C5AD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Non-employee Directors </link:label>
<link:label id="lab_srt_DirectorMember_787D0371D304B82C0168A68D6177C5AD_label_en-US" xlink:label="lab_srt_DirectorMember_787D0371D304B82C0168A68D6177C5AD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Director [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_DirectorMember" xlink:label="loc_srt_DirectorMember_787D0371D304B82C0168A68D6177C5AD" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_DirectorMember_787D0371D304B82C0168A68D6177C5AD" xlink:to="lab_srt_DirectorMember_787D0371D304B82C0168A68D6177C5AD" xlink:type="arc"/>
<link:label id="lab_vsec_EmployeeMember_D1F80EDA27DA80176554A68D617908FD_terseLabel_en-US" xlink:label="lab_vsec_EmployeeMember_D1F80EDA27DA80176554A68D617908FD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Employee </link:label>
<link:label id="lab_vsec_EmployeeMember_D1F80EDA27DA80176554A68D617908FD_label_en-US" xlink:label="lab_vsec_EmployeeMember_D1F80EDA27DA80176554A68D617908FD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Employee [Member] </link:label>
<link:label id="lab_vsec_EmployeeMember_D1F80EDA27DA80176554A68D617908FD_documentation_en-US" xlink:label="lab_vsec_EmployeeMember_D1F80EDA27DA80176554A68D617908FD" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Employee [Member] </link:label>
<link:loc xlink:href="vsec-20191231.xsd#vsec_EmployeeMember" xlink:label="loc_vsec_EmployeeMember_D1F80EDA27DA80176554A68D617908FD" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_vsec_EmployeeMember_D1F80EDA27DA80176554A68D617908FD" xlink:to="lab_vsec_EmployeeMember_D1F80EDA27DA80176554A68D617908FD" xlink:type="arc"/>
<link:label id="lab_vsec_ChiefExecutiveOffierPresidentChiefOperatingOfficerMember_6DDBF0452723575E1D21A68D61795D98_terseLabel_en-US" xlink:label="lab_vsec_ChiefExecutiveOffierPresidentChiefOperatingOfficerMember_6DDBF0452723575E1D21A68D61795D98" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> President, CEO, and COO </link:label>
<link:label id="lab_vsec_ChiefExecutiveOffierPresidentChiefOperatingOfficerMember_6DDBF0452723575E1D21A68D61795D98_label_en-US" xlink:label="lab_vsec_ChiefExecutiveOffierPresidentChiefOperatingOfficerMember_6DDBF0452723575E1D21A68D61795D98" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Chief Executive Offier, President, Chief Operating Officer [Member] </link:label>
<link:label id="lab_vsec_ChiefExecutiveOffierPresidentChiefOperatingOfficerMember_6DDBF0452723575E1D21A68D61795D98_documentation_en-US" xlink:label="lab_vsec_ChiefExecutiveOffierPresidentChiefOperatingOfficerMember_6DDBF0452723575E1D21A68D61795D98" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Chief Executive Offier, President, Chief Operating Officer [Member] </link:label>
<link:loc xlink:href="vsec-20191231.xsd#vsec_ChiefExecutiveOffierPresidentChiefOperatingOfficerMember" xlink:label="loc_vsec_ChiefExecutiveOffierPresidentChiefOperatingOfficerMember_6DDBF0452723575E1D21A68D61795D98" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_vsec_ChiefExecutiveOffierPresidentChiefOperatingOfficerMember_6DDBF0452723575E1D21A68D61795D98" xlink:to="lab_vsec_ChiefExecutiveOffierPresidentChiefOperatingOfficerMember_6DDBF0452723575E1D21A68D61795D98" xlink:type="arc"/>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_4F28587194B5473D4A05A68D6179DEF2_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_4F28587194B5473D4A05A68D6179DEF2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Share-based Compensation Arrangement by Share-based Payment Award [Line Items] </link:label>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_4F28587194B5473D4A05A68D6179DEF2_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_4F28587194B5473D4A05A68D6179DEF2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Compensation Arrangement by Share-based Payment Award [Line Items] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_4F28587194B5473D4A05A68D6179DEF2" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_4F28587194B5473D4A05A68D6179DEF2" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_4F28587194B5473D4A05A68D6179DEF2" xlink:type="arc"/>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_DABA0099D27F9A6E82D4A68D617935F9_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_DABA0099D27F9A6E82D4A68D617935F9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Shares authorized (in shares) </link:label>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_DABA0099D27F9A6E82D4A68D617935F9_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_DABA0099D27F9A6E82D4A68D617935F9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_DABA0099D27F9A6E82D4A68D617935F9" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_DABA0099D27F9A6E82D4A68D617935F9" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_DABA0099D27F9A6E82D4A68D617935F9" xlink:type="arc"/>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_B8FB24EF0441C9DA9652A68D617AF488_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_B8FB24EF0441C9DA9652A68D617AF488" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Shares available for issuance (in shares) </link:label>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_B8FB24EF0441C9DA9652A68D617AF488_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_B8FB24EF0441C9DA9652A68D617AF488" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_B8FB24EF0441C9DA9652A68D617AF488" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_B8FB24EF0441C9DA9652A68D617AF488" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_B8FB24EF0441C9DA9652A68D617AF488" xlink:type="arc"/>
<link:label id="lab_us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross_5419075301393C2257A4A68D617A987B_terseLabel_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross_5419075301393C2257A4A68D617A987B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Restricted stock awarded (in shares) </link:label>
<link:label id="lab_us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross_5419075301393C2257A4A68D617A987B_label_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross_5419075301393C2257A4A68D617A987B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Stock Issued During Period, Shares, Restricted Stock Award, Gross </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross_5419075301393C2257A4A68D617A987B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross_5419075301393C2257A4A68D617A987B" xlink:to="lab_us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross_5419075301393C2257A4A68D617A987B" xlink:type="arc"/>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_D6833AAA35D7B61BC258A68D617AB919_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_D6833AAA35D7B61BC258A68D617AB919" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Grant date fair value (in dollars per share) </link:label>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_D6833AAA35D7B61BC258A68D617AB919_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_D6833AAA35D7B61BC258A68D617AB919" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_D6833AAA35D7B61BC258A68D617AB919" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_D6833AAA35D7B61BC258A68D617AB919" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_D6833AAA35D7B61BC258A68D617AB919" xlink:type="arc"/>
<link:label id="lab_us-gaap_AllocatedShareBasedCompensationExpense_46D7951D106BA846DC33A68D617A692E_terseLabel_en-US" xlink:label="lab_us-gaap_AllocatedShareBasedCompensationExpense_46D7951D106BA846DC33A68D617A692E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Stock-based compensation expense </link:label>
<link:label id="lab_us-gaap_AllocatedShareBasedCompensationExpense_46D7951D106BA846DC33A68D617A692E_label_en-US" xlink:label="lab_us-gaap_AllocatedShareBasedCompensationExpense_46D7951D106BA846DC33A68D617A692E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Payment Arrangement, Expense </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AllocatedShareBasedCompensationExpense" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_46D7951D106BA846DC33A68D617A692E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AllocatedShareBasedCompensationExpense_46D7951D106BA846DC33A68D617A692E" xlink:to="lab_us-gaap_AllocatedShareBasedCompensationExpense_46D7951D106BA846DC33A68D617A692E" xlink:type="arc"/>
<link:label id="lab_vsec_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPercentage_BEF4A1AC76C4AC4FAFC1A68D617B9313_terseLabel_en-US" xlink:label="lab_vsec_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPercentage_BEF4A1AC76C4AC4FAFC1A68D617B9313" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Vested award is paid in our shares </link:label>
<link:label id="lab_vsec_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPercentage_BEF4A1AC76C4AC4FAFC1A68D617B9313_label_en-US" xlink:label="lab_vsec_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPercentage_BEF4A1AC76C4AC4FAFC1A68D617B9313" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Vested award is paid in our shares </link:label>
<link:label id="lab_vsec_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPercentage_BEF4A1AC76C4AC4FAFC1A68D617B9313_documentation_en-US" xlink:label="lab_vsec_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPercentage_BEF4A1AC76C4AC4FAFC1A68D617B9313" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Refers to the vested shares paid fully in percentage. </link:label>
<link:loc xlink:href="vsec-20191231.xsd#vsec_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPercentage" xlink:label="loc_vsec_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPercentage_BEF4A1AC76C4AC4FAFC1A68D617B9313" xlink:type="locator"/>
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<link:label id="lab_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_E1C42AE2BE00463DECF4A68D617B1F1D_terseLabel_en-US" xlink:label="lab_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_E1C42AE2BE00463DECF4A68D617B1F1D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Tax withholding associated with awards issued </link:label>
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<link:label id="lab_us-gaap_ScheduleOfGoodwillTextBlock_421CA5CE4125A3399CD0ED940BC292DD_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfGoodwillTextBlock_421CA5CE4125A3399CD0ED940BC292DD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Goodwill by Operating Segment </link:label>
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2 Subsequent Filings that Reference this Filing

  As Of               Filer                 Filing    For·On·As Docs:Size             Issuer                      Filing Agent

 7/21/23  Vse Corp.                         424B2                  2:431K                                   Donnelley … Solutions/FA
 7/19/23  Vse Corp.                         424B5                  1:401K                                   Donnelley … Solutions/FA
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