Top 100 Contractors in NAICS 9281: National Security and International Affairs, FY2021

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Northrop Grumman Corporation Through Vinnell Arabia, LLC Top agencies Army (Department of the Army)	$117,119,644	43.9%	Rank history: not on the FY2022–FY2025 lists; unchanged since FY2020.
2	American Institute In Taiwan Top agencies DOS (Department of State) DHS (Department of Homeland Security)	$46,561,993	17.5%	Rank history: #1 in FY2022, #1 in FY2023, #1 in FY2024 and #1 in FY2025; up 1 since FY2020.
3	John Snow, Incorporated Top agencies USAID (US Agency for International Development)	$29,600,588	11.1%	Rank history: #2 in FY2022, #2 in FY2023, #6 in FY2024 and not on the FY2025 list; up 1 since FY2020.
4	Georgia TECH Research Corp Through Georgia TECH Applied Research Corp Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$29,177,732	10.9%	Rank history: #8 in FY2022 and not on the FY2023–FY2025 lists; up 3 since FY2020.
5	International Organization for Migration Top agencies DHS (Department of Homeland Security)	$5,000,000	1.9%	Rank history: #4 in FY2022, #3 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
6	Ernst & Young LLP Top agencies USAF (Department of the Air Force)	$1,027,600	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
7	Mittarfeqarfiit A / S Top agencies USAF (Department of the Air Force)	$813,801	0.3%	Rank history: #9 in FY2022 and not on the FY2023–FY2025 lists; up 2 since FY2020.
8	Aarcorp Through Brown International Corporation Top agencies USAF (Department of the Air Force)	$804,847	0.3%	Rank history: #6 in FY2022, #5 in FY2023 and not on the FY2024–FY2025 lists; down 3 since FY2020.
9	Brown International Corporation Top agencies USAF (Department of the Air Force)	$739,546	0.3%	Rank history: not on the FY2022–FY2023 lists, #4 in FY2024 and #3 in FY2025; new, not ranked in FY2020.
10	Kasotc Special Operations Training Center Top agencies Navy (Department of the Navy)	$714,167	0.3%	Rank history: #10 in FY2022, #53 in FY2023, #5 in FY2024 and not on the FY2025 list; up 49 since FY2020.
11	Clear Cloud Secure Technologies LLC Top agencies USDA (Department of Agriculture)	$649,843	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
12	Thales Through Thales Usa, Inc. Top agencies USAF (Department of the Air Force)	$553,366	0.2%	Rank history: #90 in FY2022 and not on the FY2023–FY2025 lists; down 4 since FY2020.
13	Christine M Wondra Top agencies Treasury (Department of the Treasury)	$296,615	0.1%	Rank history: not on the FY2022 list, #98 in FY2023 and not on the FY2024–FY2025 lists; up 50 since FY2020.
14	Hawkins, David Top agencies Treasury (Department of the Treasury)	$296,177	0.1%	Rank history: #25 in FY2022, #96 in FY2023, #55 in FY2024 and not on the FY2025 list; up 42 since FY2020.
15	Lanier, Thomas Top agencies Treasury (Department of the Treasury)	$289,945	0.1%	Rank history: #40 in FY2022, #19 in FY2023, #8 in FY2024 and #6 in FY2025; up 2 since FY2020.
16	UEI F7CWBPRVVZS8 Top agencies Treasury (Department of the Treasury)	$279,412	0.1%	Rank history: #38 in FY2022, #12 in FY2023, #10 in FY2024 and #5 in FY2025; new, not ranked in FY2020.
17	Venkatesan, Shanthi Top agencies Treasury (Department of the Treasury)	$269,842	0.1%	Rank history: #22 in FY2022, #14 in FY2023 and not on the FY2024–FY2025 lists; up 22 since FY2020.
18	Francisco Ordaz Top agencies Treasury (Department of the Treasury)	$267,516	0.1%	Rank history: not on the FY2022–FY2025 lists; up 1 since FY2020.
19	Michael Croasdaile Top agencies Treasury (Department of the Treasury)	$256,874	0.1%	Rank history: not on the FY2022–FY2023 lists, #37 in FY2024 and not on the FY2025 list; up 38 since FY2020.
20	Whelan, Kevin Top agencies Treasury (Department of the Treasury)	$255,631	0.1%	Rank history: #15 in FY2022 and not on the FY2023–FY2025 lists; up 26 since FY2020.
21	UEI YVJJRWLLE4H3 Top agencies Treasury (Department of the Treasury)	$255,614	0.1%	Rank history: #19 in FY2022, #11 in FY2023, #9 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
22	Patricia Silvia Bacchi Top agencies Treasury (Department of the Treasury)	$253,752	0.1%	Rank history: #27 in FY2022, #10 in FY2023 and not on the FY2024–FY2025 lists; up 16 since FY2020.
23	Robert C Burch Top agencies Treasury (Department of the Treasury)	$252,321	0.1%	Rank history: not on the FY2022–FY2025 lists; down 5 since FY2020.
24	Elizabeth A Toder Top agencies Treasury (Department of the Treasury)	$248,966	0.1%	Rank history: #12 in FY2022 and not on the FY2023–FY2025 lists; down 4 since FY2020.
25	Edward Patrick Roche Top agencies Treasury (Department of the Treasury)	$233,971	0.1%	Rank history: not on the FY2022–FY2025 lists; up 5 since FY2020.
26	David Adam King Top agencies Treasury (Department of the Treasury)	$218,982	0.1%	Rank history: #31 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
27	UEI KGHNSLW862W7 Top agencies Treasury (Department of the Treasury)	$216,189	0.1%	Rank history: #44 in FY2022, #49 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
28	Jeanine Corvetto Top agencies Treasury (Department of the Treasury)	$213,362	0.1%	Rank history: #52 in FY2022 and not on the FY2023–FY2025 lists; up 5 since FY2020.
29	Thomas, William C Top agencies Treasury (Department of the Treasury)	$213,121	0.1%	Rank history: #37 in FY2022 and not on the FY2023–FY2025 lists; up 19 since FY2020.
30	Irmen, Rachel Top agencies Treasury (Department of the Treasury)	$213,028	0.1%	Rank history: not on the FY2022–FY2025 lists; up 5 since FY2020.
31	Khalid B Simaan Top agencies Treasury (Department of the Treasury)	$209,906	0.1%	Rank history: #30 in FY2022, #16 in FY2023 and not on the FY2024–FY2025 lists; up 18 since FY2020.
32	Grewe, Timothy Top agencies Treasury (Department of the Treasury)	$207,476	0.1%	Rank history: #26 in FY2022 and not on the FY2023–FY2025 lists; up 23 since FY2020.
33	UEI RXVJE3SZQ671 Top agencies Treasury (Department of the Treasury)	$207,283	0.1%	Rank history: #41 in FY2022, #72 in FY2023, #76 in FY2024 and not on the FY2025 list; down 6 since FY2020.
34	Nichola F Fluehr-Lobban Top agencies Treasury (Department of the Treasury)	$205,727	0.1%	Rank history: #32 in FY2022, #18 in FY2023, #12 in FY2024 and #8 in FY2025; new, not ranked in FY2020.
35	Maurice, Diane R Top agencies Treasury (Department of the Treasury)	$200,633	0.1%	Rank history: #35 in FY2022 and not on the FY2023–FY2025 lists; up 103 since FY2020.
36	UEI K4XLT3MBLDR6 Top agencies Treasury (Department of the Treasury)	$199,762	0.1%	Rank history: #20 in FY2022, #69 in FY2023 and not on the FY2024–FY2025 lists; up 60 since FY2020.
37	Beckett Sheila Top agencies Treasury (Department of the Treasury)	$198,584	0.1%	Rank history: #21 in FY2022, #20 in FY2023 and not on the FY2024–FY2025 lists; down 3 since FY2020.
38	Matthew, Lang Top agencies MCC (Millennium Challenge Corporation)	$196,337	0.1%	Rank history: #34 in FY2022, not on the FY2023 list, #70 in FY2024 and not on the FY2025 list; up 9 since FY2020.
39	Donna Kaylene Blackburn Top agencies Treasury (Department of the Treasury)	$195,694	0.1%	Rank history: #11 in FY2022, #34 in FY2023, #32 in FY2024 and not on the FY2025 list; up 3 since FY2020.
40	Crawford Marshall Andrew Top agencies Treasury (Department of the Treasury)	$192,532	0.1%	Rank history: #33 in FY2022, #17 in FY2023 and not on the FY2024–FY2025 lists; down 4 since FY2020.
41	Robidoux, Alan F Top agencies Treasury (Department of the Treasury)	$191,961	0.1%	Rank history: not on the FY2022–FY2025 lists; up 4 since FY2020.
42	Daniel Zambrano Top agencies Treasury (Department of the Treasury)	$189,056	0.1%	Rank history: #39 in FY2022, #9 in FY2023 and not on the FY2024–FY2025 lists; up 9 since FY2020.
43	UEI DQ1MWQ8P3DD5 Top agencies Treasury (Department of the Treasury)	$179,583	0.1%	Rank history: not on the FY2022 list, #59 in FY2023 and not on the FY2024–FY2025 lists; down 30 since FY2020.
44	U.s. Civilian Research and Development Foundation Top agencies DOE (Department of Energy)	$178,600	0.1%	Rank history: not on the FY2022–FY2025 lists; up 9 since FY2020.
45	Department of Military Affairs Louisiana Top agencies DOJ (Department of Justice)	$173,822	0.1%	Rank history: #91 in FY2022, #40 in FY2023 and not on the FY2024–FY2025 lists; down 31 since FY2020.
46	UEI CCDYZCBLVR81 Top agencies Treasury (Department of the Treasury)	$173,402	0.1%	Rank history: #63 in FY2022, #71 in FY2023, #53 in FY2024 and not on the FY2025 list; up 49 since FY2020.
47	Philip Gale Brand Top agencies Treasury (Department of the Treasury)	$172,203	0.1%	Rank history: not on the FY2022–FY2025 lists; up 44 since FY2020.
48	Billingsley Christie Top agencies USAID (US Agency for International Development)	$171,484	0.1%	Rank history: not on the FY2022–FY2025 lists; up 4 since FY2020.
49	Sabrina B Joy-Hogg Top agencies Treasury (Department of the Treasury)	$170,538	0.1%	Rank history: #17 in FY2022 and not on the FY2023–FY2025 lists; down 38 since FY2020.
50	Security Operations Group International LLC Top agencies USDA (Department of Agriculture)	$169,242	0.1%	Rank history: not on the FY2022–FY2025 lists; down 13 since FY2020.
51	De Rossi, Ruggero Top agencies Treasury (Department of the Treasury)	$165,780	0.1%	Rank history: not on the FY2022–FY2023 lists, #86 in FY2024 and not on the FY2025 list; down 36 since FY2020.
52	Global Carbon Capture and Storage Institute Ltd Top agencies DOE (Department of Energy)	$165,325	0.1%	Rank history: not on the FY2022–FY2025 lists; down 12 since FY2020.
53	Lisa Poggiali Top agencies USAID (US Agency for International Development)	$161,511	0.1%	Rank history: #45 in FY2022, #25 in FY2023, #64 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
54	UEI DG5KRC5F7FX3 Top agencies Treasury (Department of the Treasury)	$161,328	0.1%	Rank history: #99 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
55	Mayberry,Frances Top agencies Treasury (Department of the Treasury)	$159,623	0.1%	Rank history: not on the FY2022–FY2025 lists; up 73 since FY2020.
56	Ross, Laura Top agencies Treasury (Department of the Treasury)	$155,747	0.1%	Rank history: #28 in FY2022 and not on the FY2023–FY2025 lists; down 34 since FY2020.
57	Lehrkinder Leslie ANN Top agencies Treasury (Department of the Treasury)	$152,599	0.1%	Rank history: not on the FY2022–FY2025 lists; up 20 since FY2020.
58	UEI RMN5XMFDGC65 Top agencies Treasury (Department of the Treasury)	$151,447	0.1%	Rank history: not on the FY2022–FY2023 lists, #60 in FY2024 and not on the FY2025 list; up 75 since FY2020.
59	Ishikawa Linda J Top agencies Treasury (Department of the Treasury)	$149,057	0.1%	Rank history: #50 in FY2022, #26 in FY2023, #19 in FY2024 and #11 in FY2025; new, not ranked in FY2020.
60	Kopcke Consulting Top agencies Treasury (Department of the Treasury)	$147,471	0.1%	Rank history: not on the FY2022–FY2025 lists; up 114 since FY2020.
61	Murphy Partners LLC Top agencies Treasury (Department of the Treasury)	$143,130	0.1%	Rank history: not on the FY2022–FY2025 lists; down 29 since FY2020.
62	Lamb Russell Lewis Top agencies Treasury (Department of the Treasury)	$140,957	0.1%	Rank history: #36 in FY2022, #57 in FY2023 and not on the FY2024–FY2025 lists; down 34 since FY2020.
63	UEI KV33NPNWZYC9 Top agencies Treasury (Department of the Treasury)	$137,583	0.1%	Rank history: #86 in FY2022, #67 in FY2023, #51 in FY2024 and #16 in FY2025; new, not ranked in FY2020.
64	UEI L16QHX58WTX1 Top agencies Treasury (Department of the Treasury)	$130,661	<0.1%	Rank history: #14 in FY2022, #22 in FY2023 and not on the FY2024–FY2025 lists; up 73 since FY2020.
65	Randolph Dana Top agencies Treasury (Department of the Treasury)	$126,762	<0.1%	Rank history: #48 in FY2022, #28 in FY2023, #22 in FY2024 and #13 in FY2025; new, not ranked in FY2020.
66	Rena Toft Top agencies Treasury (Department of the Treasury)	$126,762	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
67	Thomas B Sewell Top agencies Treasury (Department of the Treasury)	$124,566	<0.1%	Rank history: #51 in FY2022, #32 in FY2023 and not on the FY2024–FY2025 lists; unchanged since FY2020.
68	UEI PNKWNXSXJR33 Top agencies Treasury (Department of the Treasury)	$123,179	<0.1%	Rank history: #53 in FY2022, #44 in FY2023, #27 in FY2024 and not on the FY2025 list; up 37 since FY2020.
69	UEI XQ7XBKXRELL5 Top agencies Treasury (Department of the Treasury)	$122,182	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
70	Michael Joseph Fox JR Top agencies Treasury (Department of the Treasury)	$117,891	<0.1%	Rank history: #56 in FY2022, #31 in FY2023, #25 in FY2024 and #14 in FY2025; new, not ranked in FY2020.
71	UEI VGH4YSBFY2V5 Top agencies Treasury (Department of the Treasury)	$116,477	<0.1%	Rank history: #68 in FY2022, #37 in FY2023, #54 in FY2024 and not on the FY2025 list; up 44 since FY2020.
72	Eugenio Sexton Ochoa Top agencies Treasury (Department of the Treasury)	$114,121	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 18 since FY2020.
73	UEI QKRDJP48ND66 Top agencies Treasury (Department of the Treasury)	$111,057	<0.1%	Rank history: #93 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
74	John J Murphy Top agencies Treasury (Department of the Treasury)	$110,971	<0.1%	Rank history: #13 in FY2022, #13 in FY2023, #11 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
75	Cara Y Bidwell Top agencies Treasury (Department of the Treasury)	$104,996	<0.1%	Rank history: #59 in FY2022, #35 in FY2023, #29 in FY2024 and not on the FY2025 list; up 3 since FY2020.
76	Bryan K Barnett Top agencies Treasury (Department of the Treasury)	$102,742	<0.1%	Rank history: not on the FY2022 list, #29 in FY2023, #24 in FY2024 and #37 in FY2025; up 63 since FY2020.
77	UEI Z53HD7PUA1J4 Top agencies Treasury (Department of the Treasury)	$98,824	<0.1%	Rank history: #76 in FY2022, #92 in FY2023 and not on the FY2024–FY2025 lists; up 55 since FY2020.
78	Tesche Jean E Top agencies Treasury (Department of the Treasury)	$98,226	<0.1%	Rank history: #78 in FY2022, #45 in FY2023, #48 in FY2024 and not on the FY2025 list; up 65 since FY2020.
79	UEI H65VZGLNQZF5 Top agencies Treasury (Department of the Treasury)	$97,524	<0.1%	Rank history: #87 in FY2022, #63 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
80	Teresa A Cochran Top agencies Treasury (Department of the Treasury)	$95,589	<0.1%	Rank history: #74 in FY2022, #46 in FY2023, #34 in FY2024 and #18 in FY2025; new, not ranked in FY2020.
81	Schutt, Timothy William Top agencies Treasury (Department of the Treasury)	$91,660	<0.1%	Rank history: #64 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
82	Thetford, Susan Top agencies Treasury (Department of the Treasury)	$91,335	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
83	William Jannace Top agencies Treasury (Department of the Treasury)	$88,788	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 21 since FY2020.
84	UEI RRXHWF6CHYH8 Top agencies Treasury (Department of the Treasury)	$87,647	<0.1%	Rank history: #42 in FY2022 and not on the FY2023–FY2025 lists; down 43 since FY2020.
85	State of Louisiana Through Department of Military Affairs Louisiana Top agencies DOJ (Department of Justice)	$86,911	<0.1%	Rank history: #43 in FY2022, #21 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
86	UEI L7HXSKF1R545 Top agencies Treasury (Department of the Treasury)	$84,721	<0.1%	Rank history: not on the FY2022 list, #33 in FY2023, #18 in FY2024 and #9 in FY2025; down 14 since FY2020.
87	UEI GJTVE8RMLV65 Top agencies Treasury (Department of the Treasury)	$83,816	<0.1%	Rank history: not on the FY2022 list, #80 in FY2023 and not on the FY2024–FY2025 lists; up 11 since FY2020.
88	UEI EL73KXVWPGC1 Top agencies Treasury (Department of the Treasury)	$82,434	<0.1%	Rank history: #100 in FY2022 and not on the FY2023–FY2025 lists; up 48 since FY2020.
89	Almaguer Frank Top agencies DOS (Department of State)	$79,000	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
90	UEI L1MVMHHFH6F9 Top agencies Treasury (Department of the Treasury)	$77,070	<0.1%	Rank history: #96 in FY2022 and not on the FY2023–FY2025 lists; up 19 since FY2020.
91	Margaret M Gavaghan Top agencies Treasury (Department of the Treasury)	$75,753	<0.1%	Rank history: #71 in FY2022, #68 in FY2023, #28 in FY2024 and #30 in FY2025; up 21 since FY2020.
92	Thales Defense & Security Inc. Top agencies USAF (Department of the Air Force)	$75,000	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
93	UEI MMXFAARFJH63 Top agencies Treasury (Department of the Treasury)	$72,971	<0.1%	Rank history: #79 in FY2022, #51 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
94	Vasquez, Javier Gustavo Top agencies Treasury (Department of the Treasury)	$71,873	<0.1%	Rank history: #84 in FY2022, #61 in FY2023, #36 in FY2024 and #28 in FY2025; down 33 since FY2020.
95	Stacy Anderson Johnson Top agencies Treasury (Department of the Treasury)	$71,339	<0.1%	Rank history: #24 in FY2022 and not on the FY2023–FY2025 lists; down 45 since FY2020.
96	Newquest Analytics LLC Top agencies Treasury (Department of the Treasury)	$69,567	<0.1%	Rank history: #60 in FY2022 and not on the FY2023–FY2025 lists; down 2 since FY2020.
97	Ministry of Defence Top agencies USAF (Department of the Air Force)	$68,119	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
98	Vaughn, Randall D Top agencies Treasury (Department of the Treasury)	$64,596	<0.1%	Rank history: not on the FY2022 list, #81 in FY2023, #45 in FY2024 and not on the FY2025 list; down 25 since FY2020.
99	Deschamps Top agencies Treasury (Department of the Treasury)	$63,162	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 36 since FY2020.
100	Gendron Amanda Chapman Top agencies Treasury (Department of the Treasury)	$62,976	<0.1%	Rank history: #83 in FY2022, #62 in FY2023, #42 in FY2024 and #44 in FY2025; up 7 since FY2020.

Rankings for the codes under NAICS 9281

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 $267 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