Top 100 Contractors in NAICS 811213: Communication Equipment Repair and Maintenance, FY2021

Name: Top 100 Contractors in NAICS 811213: Communication Equipment Repair and Maintenance, FY2021
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2020 – Sep 30, 2021 Code page on GovTribe

The top 10 won 66% of FY2021 NAICS 811213 contract dollars

Contract obligations: $431,994,078 Net of deobligations, by contracts coded NAICS 811213
Contractors: 464 Parent companies with an obligation
Largest contractor: Vectrus Systems Corporation $160 million, 29.0% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Vectrus Systems Corporation Through V2X Systems LLC Top agencies Army (Department of the Army)	$160,496,650	29.0%	Rank history: #1 in FY2022, #1 in FY2023 and not on the FY2024–FY2025 lists; unchanged since FY2020.
2	RTX Corporation 5 awardees, including Raytheon Company, Data Link Solutions LLC and Rockwell Collins, Inc. Top agencies USAF (Department of the Air Force) DISA (Defense Information Systems Agency) Navy (Department of the Navy)	$58,228,530	10.5%	Rank history: #3 in FY2022, #2 in FY2023, #2 in FY2024 and #2 in FY2025; unchanged since FY2020.
3	L3Harris Technologies, Inc. 14 awardees, including L3 Technologies, Inc., L-3 Communications Maripro, Inc. and L3Harris Global Communications, Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy) DHS (Department of Homeland Security)	$49,958,690	9.0%	Rank history: #4 in FY2022, #3 in FY2023, #8 in FY2024 and not on the FY2025 list; unchanged since FY2020.
4	Motorola Inc 4 awardees, including Motorola Solutions, Inc. and Motorola Solutions Connectivity, Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$40,581,709	7.3%	Rank history: #2 in FY2022, #5 in FY2023, #23 in FY2024 and not on the FY2025 list; up 1 since FY2020.
5	General Dynamics Corporation 4 awardees, including General Dynamics Information Technology, Inc. and General Dynamics Mission Systems, Inc. Top agencies DOT (Department of Transportation) Navy (Department of the Navy)	$29,578,481	5.3%	Rank history: #7 in FY2022, #4 in FY2023, #3 in FY2024 and #3 in FY2025; up 2 since FY2020.
6	Northrop Grumman Corporation 5 awardees, including Northrop Grumman Systems Corporation and Sonoma Photonics, Inc. Top agencies DOT (Department of Transportation) Army (Department of the Army)	$7,025,115	1.3%	Rank history: #8 in FY2022, #7 in FY2023, #5 in FY2024 and #5 in FY2025; up 2 since FY2020.
7	Arlington Capital Partners IV, L.P. Through Tyto Athene, LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$6,797,935	1.2%	Rank history: #10 in FY2022, #8 in FY2023, #27 in FY2024 and not on the FY2025 list; up 2 since FY2020.
8	Viasat Inc. 2 awardees Top agencies Navy (Department of the Navy) DOI (Department of the Interior)	$6,691,409	1.2%	Rank history: #13 in FY2022, #17 in FY2023 and not on the FY2024–FY2025 lists; up 59 since FY2020.
9	At&T Inc. 4 awardees, including At&T Technical Services Company, Inc. and Pacific Bell Telephone Company Top agencies DHS (Department of Homeland Security) DOJ (Department of Justice)	$4,457,658	0.8%	Rank history: #12 in FY2022, #10 in FY2023 and not on the FY2024–FY2025 lists; up 3 since FY2020.
10	Taft Broadcasting Company, L.L.C. Top agencies DMA (Defense Media Activity)	$4,188,304	0.8%	Rank history: #11 in FY2022, #9 in FY2023, #6 in FY2024 and #8 in FY2025; up 152 since FY2020.
11	Data Link Solutions LLC Top agencies USAF (Department of the Air Force)	$4,177,320	0.8%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
12	Leonardo S.p.A. 3 awardees, including DRS Advanced ISR LLC, DRS Sustainment Systems, Inc. and Leonardo US Cyber and Security Solutions, LLC Top agencies USAF (Department of the Air Force) DOJ (Department of Justice) DOT (Department of Transportation)	$4,051,672	0.7%	Rank history: #28 in FY2022, #61 in FY2023, #60 in FY2024 and #26 in FY2025; down 1 since FY2020.
13	Afognak Native Corporation Through Alutiiq Solutions, LLC Top agencies DOS (Department of State)	$3,072,558	0.6%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
14	The Tatitlek Corporation Through Tatitlek Federal Services LLC Top agencies DHS (Department of Homeland Security)	$2,636,304	0.5%	Rank history: #16 in FY2022, #13 in FY2023 and not on the FY2024–FY2025 lists; up 5 since FY2020.
15	Centuria Corporation Top agencies Commerce (Department of Commerce)	$2,447,109	0.4%	Rank history: #17 in FY2022, #12 in FY2023, #15 in FY2024 and not on the FY2025 list; up 3 since FY2020.
16	Allegiance Supply, Inc. Top agencies Navy (Department of the Navy)	$2,180,430	0.4%	Rank history: #15 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
17	Edge Technology Distributors, Inc. Top agencies DLA (Defense Logistics Agency) Army (Department of the Army)	$2,138,781	0.4%	Rank history: not on the FY2022–FY2025 lists; down 4 since FY2020.
18	Veterans First Initiative LLC Top agencies Navy (Department of the Navy)	$2,074,931	0.4%	Rank history: #18 in FY2022, #18 in FY2023, #13 in FY2024 and not on the FY2025 list; up 5 since FY2020.
19	Global Data Specialists, LLC Top agencies USAF (Department of the Air Force)	$2,057,777	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
20	BAE Systems Information and Electronic Systems Integration Inc. Top agencies USAF (Department of the Air Force)	$1,927,226	0.3%	Rank history: #23 in FY2022, #15 in FY2023, #12 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
21	L3 Technologies, Inc. 2 awardees Top agencies DHS (Department of Homeland Security) Army (Department of the Army)	$1,893,058	0.3%	Rank history: #35 in FY2022 and not on the FY2023–FY2025 lists; up 1 since FY2020.
22	Ball Corp Through BAE Systems Space & Mission Systems Inc. Top agencies USAF (Department of the Air Force)	$1,801,286	0.3%	Rank history: #22 in FY2022, #20 in FY2023, #73 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
23	Shiers Communication Specialists Inc. Top agencies Army (Department of the Army)	$1,800,378	0.3%	Rank history: #14 in FY2022, #19 in FY2023, #11 in FY2024 and #10 in FY2025; down 8 since FY2020.
24	Fire Creek Company Top agencies GSA (General Services Administration)	$1,549,727	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
25	Elbit Systems Ltd Through Elbitamerica, Inc. Top agencies USAF (Department of the Air Force)	$1,492,692	0.3%	Rank history: #21 in FY2022, #35 in FY2023, #65 in FY2024 and not on the FY2025 list; up 5 since FY2020.
26	Intific Inc 2 awardees, including Cubic Defense Applications, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$1,366,385	0.2%	Rank history: not on the FY2022–FY2025 lists; down 5 since FY2020.
27	LG Uplus Corp. Top agencies Army (Department of the Army)	$1,302,724	0.2%	Rank history: not on the FY2022 list, #29 in FY2023 and not on the FY2024–FY2025 lists; up 1 since FY2020.
28	Thales 2 awardees, including Thales Usa, Inc. Top agencies USAF (Department of the Air Force)	$1,287,432	0.2%	Rank history: not on the FY2022–FY2025 lists; down 12 since FY2020.
29	MCS of Tampa, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$1,183,111	0.2%	Rank history: #25 in FY2022, #31 in FY2023, #37 in FY2024 and #44 in FY2025; up 11 since FY2020.
30	Optivor Technologies, LLC Top agencies DHS (Department of Homeland Security) EEOC (Equal Employment Opportunity Commission) Navy (Department of the Navy)	$1,180,838	0.2%	Rank history: #32 in FY2022, #22 in FY2023, #22 in FY2024 and #27 in FY2025; down 10 since FY2020.
31	II Corps Consultants, Inc. Top agencies DOJ (Department of Justice)	$1,169,783	0.2%	Rank history: #27 in FY2022, #16 in FY2023, #16 in FY2024 and #29 in FY2025; up 5 since FY2020.
32	Unify Inc. Top agencies Commerce (Department of Commerce) USAF (Department of the Air Force)	$904,132	0.2%	Rank history: not on the FY2022–FY2025 lists; up 20 since FY2020.
33	Rigil Corporation Top agencies DOT (Department of Transportation)	$884,880	0.2%	Rank history: #71 in FY2022 and not on the FY2023–FY2025 lists; up 6 since FY2020.
34	International Global Solution, Corp Top agencies Navy (Department of the Navy) Army (Department of the Army)	$853,585	0.2%	Rank history: #30 in FY2022, #23 in FY2023, #17 in FY2024 and #12 in FY2025; up 68 since FY2020.
35	Best Tech, Inc. Top agencies Army (Department of the Army)	$850,680	0.2%	Rank history: #51 in FY2022 and not on the FY2023–FY2025 lists; down 1 since FY2020.
36	First American Business Solutions, Inc. Top agencies Navy (Department of the Navy)	$790,224	0.1%	Rank history: #36 in FY2022, #26 in FY2023, #20 in FY2024 and not on the FY2025 list; up 7 since FY2020.
37	Togiak Management Services, LLC Top agencies USAF (Department of the Air Force)	$764,696	0.1%	Rank history: #38 in FY2022, #27 in FY2023, #18 in FY2024 and #13 in FY2025; new, not ranked in FY2020.
38	Lockheed Martin Corporation Top agencies USAF (Department of the Air Force)	$754,837	0.1%	Rank history: #65 in FY2022, #21 in FY2023 and not on the FY2024–FY2025 lists; up 130 since FY2020.
39	Teledyne Technologies Incorporated 2 awardees, including Teledyne Flir Defense, LLC and Teledyne Instruments Inc. Top agencies Navy (Department of the Navy)	$726,244	0.1%	Rank history: not on the FY2022–FY2025 lists; up 422 since FY2020.
40	Telemetry & Communications Systems, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$691,100	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
41	Red Heritage Media LLC Top agencies DOE (Department of Energy)	$687,961	0.1%	Rank history: #69 in FY2022, #37 in FY2023, #34 in FY2024 and #19 in FY2025; new, not ranked in FY2020.
42	Sonoma Photonics, Inc. Top agencies DOT (Department of Transportation)	$650,000	0.1%	Rank history: not on the FY2022–FY2025 lists; down 15 since FY2020.
43	Control Concepts LLC Top agencies Army (Department of the Army)	$628,680	0.1%	Rank history: #29 in FY2022, #24 in FY2023, #24 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
44	Special Electronics Inc. Top agencies DOJ (Department of Justice)	$597,211	0.1%	Rank history: not on the FY2022–FY2025 lists; up 2 since FY2020.
45	Sanwa Engineering Co.,Ltd. Top agencies USAF (Department of the Air Force)	$563,442	0.1%	Rank history: #34 in FY2022, #28 in FY2023, #25 in FY2024 and not on the FY2025 list; down 12 since FY2020.
46	G-Star Telecom, Inc. Top agencies Treasury (Department of the Treasury) SBA (Small Business Administration)	$563,087	0.1%	Rank history: #56 in FY2022, #36 in FY2023, #29 in FY2024 and #23 in FY2025; down 8 since FY2020.
47	Vintun LLC Top agencies Navy (Department of the Navy)	$502,435	0.1%	Rank history: not on the FY2022–FY2025 lists; up 3 since FY2020.
48	Beacon Communications, LLC Top agencies VA (Department of Veterans Affairs)	$493,019	0.1%	Rank history: #43 in FY2022, not on the FY2023 list, #96 in FY2024 and #57 in FY2025; up 8 since FY2020.
49	Allied Services Foundation Through Burnley Workshop of Poconos Inc. Top agencies Army (Department of the Army)	$467,951	0.1%	Rank history: #61 in FY2022, #46 in FY2023, #80 in FY2024 and not on the FY2025 list; down 1 since FY2020.
50	Frequentis Defense Inc. Through Frequentis Usa, Inc. Top agencies DOT (Department of Transportation)	$463,694	0.1%	Rank history: #49 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
51	Amentum Services, Inc. Through Dyncorp International LLC Top agencies Army (Department of the Army)	$460,464	0.1%	Rank history: #52 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
52	Mainstream IP Solutions, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$432,022	0.1%	Rank history: #87 in FY2022 and not on the FY2023–FY2025 lists; up 29 since FY2020.
53	Astronautics Corporation of America 2 awardees Top agencies USAF (Department of the Air Force)	$430,955	0.1%	Rank history: #76 in FY2022, #30 in FY2023, #31 in FY2024 and #17 in FY2025; up 138 since FY2020.
54	OSI Vision LLC Top agencies Army (Department of the Army)	$404,826	0.1%	Rank history: not on the FY2022–FY2025 lists; up 3 since FY2020.
55	VT Milcom Inc. Top agencies Navy (Department of the Navy)	$397,581	0.1%	Rank history: not on the FY2022–FY2025 lists; down 29 since FY2020.
56	Transdigm Group Incorporated Through Transicoil LLC Top agencies USAF (Department of the Air Force)	$386,588	0.1%	Rank history: #57 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
57	Team Ronco Incorporated Top agencies Navy (Department of the Navy)	$380,565	0.1%	Rank history: not on the FY2022–FY2025 lists; up 2 since FY2020.
58	Peak Signals, LLC Top agencies USAF (Department of the Air Force) DOI (Department of the Interior)	$380,243	0.1%	Rank history: #46 in FY2022, #56 in FY2023, #56 in FY2024 and not on the FY2025 list; up 18 since FY2020.
59	Advanced Communication Cabling Inc. Top agencies Army (Department of the Army)	$372,542	0.1%	Rank history: #78 in FY2022, #70 in FY2023, #45 in FY2024 and not on the FY2025 list; up 2 since FY2020.
60	General Dynamics Satcom Technologies Inc. 2 awardees, including Communications & Power Industries Canada Inc. and CPI Electron Device Business, Inc. Top agencies Navy (Department of the Navy) DOT (Department of Transportation)	$360,045	0.1%	Rank history: #48 in FY2022 and not on the FY2023–FY2025 lists; up 255 since FY2020.
61	Griffon Corporation Through Telephonics Corp Top agencies USAF (Department of the Air Force)	$354,830	0.1%	Rank history: not on the FY2022 list, #41 in FY2023 and not on the FY2024–FY2025 lists; up 52 since FY2020.
62	Mid-Atlantic Communications, Inc. Top agencies DOJ (Department of Justice)	$352,143	0.1%	Rank history: not on the FY2022–FY2025 lists; down 18 since FY2020.
63	Motorola Solutions, Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy)	$321,666	0.1%	Rank history: not on the FY2022–FY2023 lists, #4 in FY2024 and #4 in FY2025; down 46 since FY2020.
64	Convergent Telecom, Inc. Top agencies DOJ (Department of Justice)	$319,697	0.1%	Rank history: #64 in FY2022 and not on the FY2023–FY2025 lists; down 4 since FY2020.
65	General Datacomm Industries Inc. Through General Datacomm, Inc. Top agencies DOT (Department of Transportation)	$299,163	0.1%	Rank history: #67 in FY2022, #43 in FY2023, #53 in FY2024 and not on the FY2025 list; up 59 since FY2020.
66	Corrections Colorado Department of Through The Governors Office of Information Technology Top agencies Commerce (Department of Commerce)	$297,193	0.1%	Rank history: #68 in FY2022, #44 in FY2023, #35 in FY2024 and not on the FY2025 list; down 2 since FY2020.
67	Tmpc Inc. Top agencies Navy (Department of the Navy)	$296,691	0.1%	Rank history: #66 in FY2022, #47 in FY2023, #57 in FY2024 and not on the FY2025 list; down 1 since FY2020.
68	Pegasus Radio Corp Top agencies NARA (National Archives and Records Administration) VA (Department of Veterans Affairs) Commerce (Department of Commerce)	$283,959	0.1%	Rank history: #84 in FY2022, #58 in FY2023, not on the FY2024 list and #93 in FY2025; down 6 since FY2020.
69	JE Hurley Co Top agencies VA (Department of Veterans Affairs)	$283,308	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
70	Dover Corporation Through Pole / Zero LLC Top agencies USAF (Department of the Air Force)	$282,825	0.1%	Rank history: not on the FY2022–FY2025 lists; down 1 since FY2020.
71	Fedtec LLC Top agencies Navy (Department of the Navy)	$274,781	<0.1%	Rank history: #74 in FY2022, #48 in FY2023 and not on the FY2024–FY2025 lists; down 3 since FY2020.
72	J2 Associates, LLC Top agencies USAF (Department of the Air Force)	$268,200	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 31 since FY2020.
73	Oteka Technologies LLC Top agencies Navy (Department of the Navy)	$249,666	<0.1%	Rank history: #79 in FY2022, #51 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
74	Fairwinds Technologies LLC Top agencies Army (Department of the Army)	$248,417	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
75	IWA Technical Services, Inc. Top agencies VA (Department of Veterans Affairs)	$246,000	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 18 since FY2020.
76	Expedition Communications, LLC Top agencies VA (Department of Veterans Affairs)	$245,534	<0.1%	Rank history: #97 in FY2022 and not on the FY2023–FY2025 lists; up 12 since FY2020.
77	T.m.c Telekomunikasyon Bilgisayar Insaat Sanayi VE Ticaret Limited Sirketi Top agencies USAF (Department of the Air Force)	$239,180	<0.1%	Rank history: #53 in FY2022 and not on the FY2023–FY2025 lists; up 2 since FY2020.
78	Hi-Test Laboratories, Inc. Top agencies Navy (Department of the Navy)	$237,200	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
79	Unified C4 LLC Top agencies Navy (Department of the Navy)	$233,515	<0.1%	Rank history: #82 in FY2022, #54 in FY2023, #40 in FY2024 and #25 in FY2025; new, not ranked in FY2020.
80	Equal Opportunity Commission Nebraska Through Executive Office of the State of Nebraska Top agencies Commerce (Department of Commerce)	$232,476	<0.1%	Rank history: #81 in FY2022, #52 in FY2023, #39 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
81	Federal Signal Corp Top agencies USAF (Department of the Air Force) EOP (Executive Office of the President)	$228,773	<0.1%	Rank history: #77 in FY2022, #49 in FY2023, #59 in FY2024 and not on the FY2025 list; up 9 since FY2020.
82	Alaska Native Government Services LLC Through Copper River Enterprise Services, LLC Top agencies DHS (Department of Homeland Security)	$226,469	<0.1%	Rank history: #75 in FY2022, #76 in FY2023 and not on the FY2024–FY2025 lists; up 7 since FY2020.
83	Racom Corporation Top agencies Army (Department of the Army)	$225,621	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 159 since FY2020.
84	Premier Vehicle Installation, Inc. Top agencies DOI (Department of the Interior)	$222,731	<0.1%	Rank history: #90 in FY2022 and not on the FY2023–FY2025 lists; up 51 since FY2020.
85	Roger's Two Way Radio, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$220,434	<0.1%	Rank history: #59 in FY2022, #73 in FY2023, #50 in FY2024 and #22 in FY2025; down 27 since FY2020.
86	Double R Communications Inc. Top agencies Commerce (Department of Commerce)	$219,059	<0.1%	Rank history: #85 in FY2022, #55 in FY2023, #41 in FY2024 and #38 in FY2025; up 5 since FY2020.
87	Flir Systems Inc. Through Teledyne Flir Defense, LLC Top agencies Navy (Department of the Navy)	$215,721	<0.1%	Rank history: not on the FY2022–FY2025 lists; down 32 since FY2020.
88	Reliable Supply Chains International Inc. Top agencies DOS (Department of State)	$215,155	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 126 since FY2020.
89	Johnson Controls Security Solutions LLC 2 awardees, including Johnson Controls Fire Protection LP and Johnson Controls, Inc. Top agencies VA (Department of Veterans Affairs) EPA (Environmental Protection Agency) DHA (Defense Health Agency)	$210,229	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 331 since FY2020.
90	Wisconsin Educational Communications Board Top agencies Commerce (Department of Commerce)	$207,405	<0.1%	Rank history: #88 in FY2022, #60 in FY2023, #44 in FY2024 and #40 in FY2025; up 6 since FY2020.
91	Metrostar Systems, LLC Top agencies DOS (Department of State)	$204,380	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
92	Cubic Defense Applications, Inc. Top agencies USAF (Department of the Air Force)	$201,806	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 6 since FY2020.
93	Isoft Solutions, LLC Top agencies Navy (Department of the Navy) VA (Department of Veterans Affairs)	$191,887	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 35 since FY2020.
94	Alabama Public Television Top agencies Commerce (Department of Commerce)	$187,122	<0.1%	Rank history: #91 in FY2022, #62 in FY2023, #46 in FY2024 and #62 in FY2025; up 5 since FY2020.
95	The Will-Burt Company Top agencies Navy (Department of the Navy)	$183,470	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
96	NEU Technologies Group, LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$182,421	<0.1%	Rank history: not on the FY2022–FY2025 lists; down 14 since FY2020.
97	Trinity Dynamics, Inc. Top agencies DOJ (Department of Justice)	$182,137	<0.1%	Rank history: not on the FY2022 list, #79 in FY2023, not on the FY2024 list and #35 in FY2025; down 56 since FY2020.
98	Collaborative Technologies and Communications Corp. Top agencies DHA (Defense Health Agency)	$181,535	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
99	Idemia Identity & Security France Top agencies DOS (Department of State)	$180,000	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
100	GIM Corporation Top agencies USAF (Department of the Air Force)	$176,629	<0.1%	Rank history: #99 in FY2022, #53 in FY2023, #48 in FY2024 and #33 in FY2025; new, not ranked in FY2020.

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100 of 464 contractors listed here. See the rest on GovTribe.

How this ranking works

Source: every contract action FPDS records (as published on SAM.gov) in the period, as GovTribe received it.
Amounts are net obligations: what was obligated, less what was deobligated. Shares are of $553 million obligated before deobligations, so they never pass 100%.
Parent companies: each action counts under the ultimate parent its award record names, or under the awardee when it names none, so no dollar counts twice. Parents of the same name (Inc., LLC and the like aside) count as one company, since FPDS records a company's parent under more than one UEI over time. GovTribe corrects a few parents and names by hand; see the corrections.
Fiscal year 2021 ran Oct 1, 2020 – Sep 30, 2021. The Department of Defense reports its contract actions to FPDS about 90 days late, so a fiscal year is ranked once they're in, in February, and the list doesn't change after.
Rank changes compare with FY2020. "New" marks a company outside that period's top 500, and "Returned" one of those that was on an earlier fiscal year's list.
Rank lines show each company's rank on every fiscal year's list since FY2021, #1 at the top, on a scale that gives the top of the list more room. A dashed stretch spans years it wasn't on the list. The step from FY2020 takes the color of the rank change beside it.
Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

Quick answers

Who were the top 10 NAICS 811213 contractors in FY2021?

1. Vectrus Systems Corporation ($160M), 2. RTX Corporation ($58.2M), 3. L3Harris Technologies, Inc. ($50M), 4. Motorola Inc ($40.6M), 5. General Dynamics Corporation ($29.6M), 6. Northrop Grumman Corporation ($7.03M), 7. Arlington Capital Partners IV, L.P. ($6.8M), 8. Viasat Inc. ($6.69M), 9. At&T Inc. ($4.46M), 10. Taft Broadcasting Company, L.L.C. ($4.19M).

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