Top 39 Contractors in PSC AC34: National Defense R&D Services; Defense-Related Activities; R&D Administrative Expenses, FY2021

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Seacorp, LLC Top agencies Navy (Department of the Navy)	$19,409,377	23.9%	Rank history: #1 in FY2022, #1 in FY2023, #1 in FY2024 and #4 in FY2025; up 2 since FY2020.
2	Amentum Services, Inc. 2 awardees, including Dyncorp International LLC Top agencies USAF (Department of the Air Force)	$8,078,816	10.0%	Rank history: #14 in FY2022, #40 in FY2023 and not on the FY2024–FY2025 lists; up 16 since FY2020.
3	Cardinal Engineering, LLC Top agencies Navy (Department of the Navy)	$7,858,883	9.7%	Rank history: #9 in FY2022, #9 in FY2023 and not on the FY2024–FY2025 lists; up 3 since FY2020.
4	General Dynamics Mission Systems, Inc. Top agencies Navy (Department of the Navy)	$5,726,597	7.1%	Rank history: #2 in FY2022, #2 in FY2023, #3 in FY2024 and not on the FY2025 list; up 1 since FY2020.
5	NTI Corporation Top agencies Navy (Department of the Navy)	$5,537,317	6.8%	Rank history: #5 in FY2022, #5 in FY2023, #23 in FY2024 and not on the FY2025 list; down 1 since FY2020.
6	Mikel, Inc. Top agencies Navy (Department of the Navy)	$4,265,618	5.3%	Rank history: #16 in FY2022, #6 in FY2023 and not on the FY2024–FY2025 lists; down 4 since FY2020.
7	Vectrus Systems Corporation Through V2X Systems LLC Top agencies USAF (Department of the Air Force)	$4,189,308	5.2%	Rank history: #7 in FY2022, #3 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
8	IAP Global Services LLC Through Readiness Management Support LC Top agencies USAF (Department of the Air Force)	$3,461,424	4.3%	Rank history: not on the FY2022 list, #7 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
9	CACI International Inc. 2 awardees, including Caci Technologies, LLC and Caci, Inc. - Federal Top agencies Navy (Department of the Navy)	$2,788,416	3.4%	Rank history: #23 in FY2022 and not on the FY2023–FY2025 lists; down 2 since FY2020.
10	TDI Technologies, Inc. Top agencies Navy (Department of the Navy)	$2,766,652	3.4%	Rank history: #11 in FY2022, #23 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
11	Aegis Aerospace Inc. Top agencies USAF (Department of the Air Force)	$2,476,000	3.1%	Rank history: #21 in FY2022, not on the FY2023–FY2024 lists and #26 in FY2025; new, not ranked in FY2020.
12	Deloitte LLP Through Deloitte Consulting LLP Top agencies DLA (Defense Logistics Agency)	$1,951,143	2.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
13	Coherent Technical Services, Inc. Top agencies Navy (Department of the Navy)	$1,570,250	1.9%	Rank history: #20 in FY2022, #20 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
14	Science Applications International Corporation Top agencies USAF (Department of the Air Force)	$1,371,363	1.7%	Rank history: #15 in FY2022, #11 in FY2023, #8 in FY2024 and #16 in FY2025; new, not ranked in FY2020.
15	Technology Unlimited Group Top agencies Navy (Department of the Navy)	$1,321,271	1.6%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
16	Mayflower Communications Company, Inc. Top agencies Navy (Department of the Navy)	$853,123	1.1%	Rank history: #12 in FY2022, #30 in FY2023, #9 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
17	Teamworx Security, Inc. Top agencies USAF (Department of the Air Force)	$756,103	0.9%	Rank history: #46 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
18	Geofabrica Inc. Top agencies Army (Department of the Army)	$671,977	0.8%	Rank history: #28 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
19	RTX Corporation Through Raytheon Company Top agencies Army (Department of the Army)	$500,000	0.6%	Rank history: #25 in FY2022, #22 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
20	Government of Canada Through Canadian Commercial Corporation Top agencies Navy (Department of the Navy)	$379,000	0.5%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
21	National Strategic Research Institute Top agencies USAF (Department of the Air Force)	$375,166	0.5%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
22	Parsons Corporation Through Parsons Government Services Inc. Top agencies DFAS (Defense Finance and Accounting Service) Navy (Department of the Navy)	$363,000	0.4%	Rank history: #26 in FY2022, #32 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
23	Leidos Holdings, Inc. Through Leidos, Inc. Top agencies Navy (Department of the Navy)	$344,484	0.4%	Rank history: not on the FY2022 list, #26 in FY2023, #21 in FY2024 and #14 in FY2025; down 22 since FY2020.
24	HP Enterprise Services LLC Through Peraton Inc. Top agencies Navy (Department of the Navy)	$327,427	0.4%	Rank history: not on the FY2022–FY2025 lists; down 11 since FY2020.
25	Innovative Defense Technologies, LLC Top agencies Navy (Department of the Navy)	$323,769	0.4%	Rank history: #19 in FY2022, #18 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
26	Innova Architects Inc. Top agencies USAF (Department of the Air Force)	$315,114	0.4%	Rank history: #35 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
27	Utah State University Top agencies Navy (Department of the Navy)	$305,000	0.4%	Rank history: #24 in FY2022, #29 in FY2023, #20 in FY2024 and #31 in FY2025; down 19 since FY2020.
28	WJA PLLC Top agencies USAF (Department of the Air Force)	$252,643	0.3%	Rank history: #27 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
29	Brymak & Associates, Inc. Top agencies USAF (Department of the Air Force)	$220,668	0.3%	Rank history: #47 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
30	Feditc, LLC Top agencies USAF (Department of the Air Force)	$180,000	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
31	Ecompex, Inc. Top agencies USAF (Department of the Air Force) DHA (Defense Health Agency)	$118,118	0.1%	Rank history: #37 in FY2022, #35 in FY2023, #28 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
32	World Wide Technology Holding Co. Inc. Through World Wide Technology LLC Top agencies Navy (Department of the Navy)	$104,472	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
33	Solid State Scientific Corporation Top agencies USAF (Department of the Air Force)	$77,999	0.1%	Rank history: #39 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
34	Kelly Innovations, Inc. Top agencies Army (Department of the Army)	$64,920	0.1%	Rank history: #41 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
35	General Dynamics Corporation 2 awardees, including Applied Physical Sciences Corp Top agencies Navy (Department of the Navy)	$63,183	0.1%	Rank history: #38 in FY2022, not on the FY2023–FY2024 lists and #22 in FY2025; new, not ranked in FY2020.
36	Remington Arms Company LLC Through Dyncorp International LLC Top agencies USAF (Department of the Air Force)	$60,000	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
37	Interphase Materials, Inc. Top agencies Navy (Department of the Navy)	$59,658	0.1%	Rank history: not on the FY2022–FY2025 lists; down 27 since FY2020.
38	Caci Technologies, LLC Top agencies Navy (Department of the Navy)	$20,500	<0.1%	Rank history: #34 in FY2022 and not on the FY2023–FY2025 lists; down 29 since FY2020.
39	Valco Instruments Co Inc. Top agencies Army (Department of the Army)	$9,200	<0.1%	Rank history: #48 in FY2022, #42 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.

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 $81.2 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.

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