Top 100 Contractors in NAICS 56: Administrative and Support and Waste Management and Remediation Services, FY2022

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Honeywell International Inc. 11 awardees, including National Technology & Engineering Solutions of Sandia, LLC, Honeywell Federal Manufacturing & Technologies, LLC and Vindicator Technologies, Inc. Top agencies DOE (Department of Energy) USAF (Department of the Air Force) DTRA (Defense Threat Reduction Agency)	$6,266,460,763	10.1%	Rank history: #1 in FY2021, #1 in FY2023, #1 in FY2024 and #1 in FY2025; unchanged since FY2021.
2	Triad National Security, LLC Top agencies DOE (Department of Energy) DTRA (Defense Threat Reduction Agency) DARPA (Defense Advanced Research Projects Agency)	$3,937,029,094	6.4%	Rank history: #2 in FY2021, #2 in FY2023, #2 in FY2024 and #2 in FY2025; unchanged since FY2021.
3	Kbr, Inc. 5 awardees, including KBR Services, LLC and KBR Wyle Services, LLC Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$3,871,407,467	6.3%	Rank history: #3 in FY2021, #90 in FY2023 and not on the FY2024–FY2025 lists; unchanged since FY2021.
4	Consolidated Nuclear Security, LLC Top agencies DOE (Department of Energy) OSD (Office of the Secretary of Defense) Army (Department of the Army)	$3,816,510,814	6.2%	Rank history: #4 in FY2021, #3 in FY2023, #3 in FY2024 and #6 in FY2025; unchanged since FY2021.
5	Amentum Services, Inc. 7 awardees, including Washington River Protection Solutions LLC, Central Plateau Cleanup Company, LLC and URS Federal Services International, Inc. Top agencies DOE (Department of Energy) USAF (Department of the Air Force) Army (Department of the Army)	$2,574,097,194	4.2%	Rank history: #5 in FY2021, #8 in FY2023, #6 in FY2024 and not on the FY2025 list; unchanged since FY2021.
6	Ut-Battelle LLC Top agencies DOE (Department of Energy)	$2,469,176,857	4.0%	Rank history: #6 in FY2021, #5 in FY2023, #5 in FY2024 and #5 in FY2025; unchanged since FY2021.
7	Savannah River Nuclear Solutions LLC Top agencies DOE (Department of Energy)	$2,011,510,081	3.3%	Rank history: #8 in FY2021, #6 in FY2023, #53 in FY2024 and not on the FY2025 list; up 1 since FY2021.
8	Vectrus Systems Corporation 8 awardees, including V2X Systems LLC, Vectrus Services A / S and Vectrus Federal Services GMBH Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$1,566,119,857	2.5%	Rank history: #7 in FY2021, #4 in FY2023, #26 in FY2024 and not on the FY2025 list; down 1 since FY2021.
9	Fluor Corporation 8 awardees, including Fluor-Bwxt Portsmouth LLC, Fluor Intercontinental, Inc. and Fluor Federal Petroleum Operations, LLC Top agencies DOE (Department of Energy) USAF (Department of the Air Force) Army (Department of the Army)	$1,121,720,032	1.8%	Rank history: #9 in FY2021, #16 in FY2023, #4 in FY2024 and #4 in FY2025; unchanged since FY2021.
10	Mission Support & Test Services LLC Top agencies DOE (Department of Energy) Army (Department of the Army) USAF (Department of the Air Force)	$923,201,423	1.5%	Rank history: #12 in FY2021, #11 in FY2023, #9 in FY2024 and #14 in FY2025; up 2 since FY2021.
11	Triple Canopy Inc. 6 awardees, including Centerra Group, LLC, Centerra Integrated Facilities Services, LLC and Omniplex World Services Corporation Top agencies DHS (Department of Homeland Security) AOUSC (Administrative Office of the U.S. Courts) DOE (Department of Energy)	$831,683,267	1.3%	Rank history: #14 in FY2021, #22 in FY2023, #40 in FY2024 and #26 in FY2025; up 3 since FY2021.
12	Lockheed Martin Corporation 3 awardees, including Sikorsky Aircraft Corporation Top agencies USSOCOM (United States Special Operations Command) USAF (Department of the Air Force) Army (Department of the Army)	$796,436,317	1.3%	Rank history: #13 in FY2021, #17 in FY2023, #13 in FY2024 and #16 in FY2025; up 1 since FY2021.
13	The GEO Group, Inc. 4 awardees, including B.i. Incorporated, GEO Secure Services, LLC and GEO Transport, Inc. Top agencies DHS (Department of Homeland Security) DOJ (Department of Justice)	$786,562,233	1.3%	Rank history: #16 in FY2021, #14 in FY2023, #12 in FY2024 and #15 in FY2025; up 3 since FY2021.
14	Bechtel Corp 3 awardees, including Bechtel National, Inc. and Bechtel Parsons Blue Grass, A Joint Venture Top agencies Army (Department of the Army)	$783,643,504	1.3%	Rank history: #17 in FY2021, #12 in FY2023, #19 in FY2024 and #35 in FY2025; up 3 since FY2021.
15	Maximus Inc. Through Maximus Federal Services, Inc. Top agencies HHS (Department of Health and Human Services) Treasury (Department of the Treasury) DHS (Department of Homeland Security)	$746,793,477	1.2%	Rank history: #10 in FY2021, #15 in FY2023 and not on the FY2024–FY2025 lists; down 5 since FY2021.
16	Securitas AB 5 awardees, including Paragon Systems Inc., Securitas Critical Infrastructure Services, Inc. and Securitas Electronic Security, Inc. Top agencies DHS (Department of Homeland Security) DCSA (Defense Counterintelligence and Security Agency) AOUSC (Administrative Office of the U.S. Courts)	$695,595,162	1.1%	Rank history: #15 in FY2021, #20 in FY2023, #34 in FY2024 and not on the FY2025 list; down 1 since FY2021.
17	Savannah River Mission Completion, LLC Top agencies DOE (Department of Energy)	$642,161,403	1.0%	Rank history: not on the FY2021 list, #13 in FY2023, #11 in FY2024 and #13 in FY2025; new.
18	AECOM 11 awardees, including Nuclear Waste Partnership LLC, Ucor LLC and AECOM Technical Services, Inc. Top agencies DOE (Department of Energy) EPA (Environmental Protection Agency) Navy (Department of the Navy)	$604,903,001	1.0%	Rank history: #11 in FY2021, #46 in FY2023 and not on the FY2024–FY2025 lists; down 7 since FY2021.
19	General Dynamics Corporation 10 awardees, including General Dynamics Information Technology, Inc., General Dynamics OTS (Wilkes Barre), LLC and General Dynamics Land Systems Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy) NASA (National Aeronautics and Space Administration)	$363,342,800	0.6%	Rank history: #30 in FY2021, #10 in FY2023, #17 in FY2024 and #25 in FY2025; up 11 since FY2021.
20	PAE Government Services Inc. 10 awardees, including Amentum Spaceport LLC, FCI Federal, LLC and Pae-Perini LLC Top agencies DOS (Department of State) NASA (National Aeronautics and Space Administration) USAF (Department of the Air Force)	$356,710,611	0.6%	Rank history: #21 in FY2021, #21 in FY2023 and not on the FY2024–FY2025 lists; up 1 since FY2021.
21	Michael Baker International, LLC Through Sallyport Global Holdings Inc. Top agencies USAF (Department of the Air Force)	$289,472,647	0.5%	Rank history: #37 in FY2021, #28 in FY2023, #38 in FY2024 and not on the FY2025 list; up 16 since FY2021.
22	URS Federal Services International, Inc. Top agencies USAF (Department of the Air Force)	$283,000,000	0.5%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
23	Leidos Holdings, Inc. 8 awardees, including Leidos, Inc., Leidos Biomedical Research Inc. and Leidos Security Detection & Automation, Inc. Top agencies NSF (National Science Foundation) Army (Department of the Army) HHS (Department of Health and Human Services)	$268,235,450	0.4%	Rank history: #22 in FY2021, #27 in FY2023, #28 in FY2024 and #24 in FY2025; down 1 since FY2021.
24	Jacobs Engineering Group Inc. 12 awardees, including Amentum Technology, Inc., Ch2M Hill, Inc. and Ch2M Facility Support Services, LLC Top agencies NASA (National Aeronautics and Space Administration) Navy (Department of the Navy) EPA (Environmental Protection Agency)	$267,248,197	0.4%	Rank history: #19 in FY2021, #23 in FY2023, #22 in FY2024 and not on the FY2025 list; down 5 since FY2021.
25	Fedex Corp 3 awardees, including Fedex Supply Chain Distribution System, Inc. Top agencies VA (Department of Veterans Affairs) DOJ (Department of Justice) DOI (Department of the Interior)	$253,185,933	0.4%	Rank history: #27 in FY2021, #29 in FY2023, #32 in FY2024 and #23 in FY2025; up 2 since FY2021.
26	Mvm, Inc. Top agencies DHS (Department of Homeland Security) DOJ (Department of Justice)	$249,205,202	0.4%	Rank history: #52 in FY2021, #37 in FY2023, #44 in FY2024 and #46 in FY2025; up 26 since FY2021.
27	Arctic Slope Regional Corporation 9 awardees, including Asrc Federal Field Services, LLC, Asrc Communications, Ltd. and Environmental Quality Management, Inc. Top agencies USAF (Department of the Air Force) DHS (Department of Homeland Security) Commerce (Department of Commerce)	$237,326,181	0.4%	Rank history: #25 in FY2021, #26 in FY2023, #33 in FY2024 and #18 in FY2025; down 2 since FY2021.
28	Metropolitan Security Services, Inc. Top agencies AOUSC (Administrative Office of the U.S. Courts) DOJ (Department of Justice) GSA (General Services Administration)	$228,163,293	0.4%	Rank history: #36 in FY2021, #32 in FY2023, #21 in FY2024 and #22 in FY2025; up 8 since FY2021.
29	Corecivic, Inc. Top agencies DHS (Department of Homeland Security) DOJ (Department of Justice)	$227,593,182	0.4%	Rank history: #32 in FY2021, #43 in FY2023, #50 in FY2024 and #27 in FY2025; up 3 since FY2021.
30	The Day & Zimmermann Group, Inc. 3 awardees, including SOC LLC, SOC Nevada LLC and American Ordnance LLC Top agencies DOS (Department of State) DOE (Department of Energy) Army (Department of the Army)	$219,762,377	0.4%	Rank history: #28 in FY2021, #40 in FY2023 and not on the FY2024–FY2025 lists; down 2 since FY2021.
31	EA Engineering, Science, and Technology, Inc., PBC 2 awardees Top agencies EPA (Environmental Protection Agency) Army (Department of the Army) USAF (Department of the Air Force)	$212,619,686	0.3%	Rank history: #55 in FY2021, #35 in FY2023 and not on the FY2024–FY2025 lists; up 24 since FY2021.
32	Nana Regional Corporation Inc 12 awardees, including Akima Global Services, LLC, Akima Support Operations, LLC and Akima Intra-Data, LLC Top agencies DHS (Department of Homeland Security) USAF (Department of the Air Force) Army (Department of the Army)	$204,772,121	0.3%	Rank history: #23 in FY2021, #34 in FY2023 and not on the FY2024–FY2025 lists; down 9 since FY2021.
33	J & J Maintenance Inc. 2 awardees, including J&J Germany GMBH Top agencies Army (Department of the Army) DECA (Defense Commissary Agency) HHS (Department of Health and Human Services)	$203,081,308	0.3%	Rank history: #39 in FY2021, #42 in FY2023 and not on the FY2024–FY2025 lists; up 6 since FY2021.
34	Pride Industries Top agencies Army (Department of the Army) USAF (Department of the Air Force) Treasury (Department of the Treasury)	$191,102,296	0.3%	Rank history: #34 in FY2021, #38 in FY2023, #45 in FY2024 and #59 in FY2025; unchanged since FY2021.
35	The Chenega Corporation 12 awardees, including Chenega Global Protection, LLC, Chenega Facilities Management LLC and Chenega Healthcare Services LLC Top agencies Army (Department of the Army) NASA (National Aeronautics and Space Administration) HHS (Department of Health and Human Services)	$190,094,165	0.3%	Rank history: #46 in FY2021, #31 in FY2023 and not on the FY2024–FY2025 lists; up 11 since FY2021.
36	Skookum Educational Programs Top agencies Army (Department of the Army) Navy (Department of the Navy) DHS (Department of Homeland Security)	$177,068,766	0.3%	Rank history: #43 in FY2021, #41 in FY2023, #47 in FY2024 and #37 in FY2025; up 7 since FY2021.
37	Afognak Native Corporation 14 awardees, including Alutiiq Commercial Enterprises LLC, Alutiiq Information Management, LLC and "Alutiiq Logistics & Maintenance Services, Llc" Top agencies USAF (Department of the Air Force) DOS (Department of State) Navy (Department of the Navy)	$171,841,804	0.3%	Rank history: #29 in FY2021, #64 in FY2023 and not on the FY2024–FY2025 lists; down 8 since FY2021.
38	Inter-Con Security Systems, Inc. Top agencies DOS (Department of State) DOJ (Department of Justice) NARA (National Archives and Records Administration)	$169,529,342	0.3%	Rank history: #41 in FY2021, #49 in FY2023 and not on the FY2024–FY2025 lists; up 3 since FY2021.
39	Syncom Space Services LLC Top agencies NASA (National Aeronautics and Space Administration) Navy (Department of the Navy)	$167,564,963	0.3%	Rank history: #38 in FY2021, #52 in FY2023 and not on the FY2024–FY2025 lists; down 1 since FY2021.
40	G4S Holding One Inc. 10 awardees, including G4S Secure Integration LLC, G4S Secure Solutions (USA) Inc. and G4S Secure Solutions International Inc. Top agencies DOS (Department of State) DHS (Department of Homeland Security) Navy (Department of the Navy)	$160,662,404	0.3%	Rank history: #42 in FY2021 and not on the FY2023–FY2025 lists; up 2 since FY2021.
41	CACI International Inc. 7 awardees, including Caci Premier Technology, LLC, Caci, Inc. - Federal and Caci, LLC - Commercial Top agencies DCSA (Defense Counterintelligence and Security Agency) USAF (Department of the Air Force) DHS (Department of Homeland Security)	$158,394,394	0.3%	Rank history: #24 in FY2021, #33 in FY2023, #39 in FY2024 and #28 in FY2025; down 17 since FY2021.
42	BAE Systems PLC 3 awardees, including BAE Systems Ordnance Systems Inc. Top agencies Army (Department of the Army)	$145,505,994	0.2%	Rank history: #18 in FY2021, #24 in FY2023 and not on the FY2024–FY2025 lists; down 24 since FY2021.
43	HP Enterprise Services LLC 4 awardees, including Peraton Risk Decision Inc., Peraton Inc. and Cotiviti GOV Services, LLC Top agencies DCSA (Defense Counterintelligence and Security Agency) DHS (Department of Homeland Security) DOI (Department of the Interior)	$145,258,632	0.2%	Rank history: not on the FY2021 list, #39 in FY2023, #83 in FY2024 and not on the FY2025 list; up 187 since FY2021.
44	Aptim Federal Services LLC 2 awardees, including High Desert Support Services, LLC Top agencies DLA (Defense Logistics Agency) Army (Department of the Army) Navy (Department of the Navy)	$144,356,819	0.2%	Rank history: #51 in FY2021, #36 in FY2023 and not on the FY2024–FY2025 lists; up 7 since FY2021.
45	Chugach Alaska Corporation 9 awardees, including Wolf Creek Federal Services LLC, Defense Base Services, LLC and Chugach Consolidated Solutions, LLC Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$143,831,911	0.2%	Rank history: #48 in FY2021, #48 in FY2023, #91 in FY2024 and not on the FY2025 list; up 3 since FY2021.
46	Tlingit Haida Tribal Business Corporation 6 awardees, including T&H Services, LLC, Kira Training Services LLC and Kira Aviation Services LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$140,061,172	0.2%	Rank history: #59 in FY2021, #54 in FY2023, #90 in FY2024 and not on the FY2025 list; up 13 since FY2021.
47	KBR Services LLC Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$137,350,251	0.2%	Rank history: not on the FY2021 list, #7 in FY2023, #23 in FY2024 and not on the FY2025 list; new.
48	Professional Contract Services, Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy) DHS (Department of Homeland Security)	$135,844,067	0.2%	Rank history: #53 in FY2021, #50 in FY2023, #55 in FY2024 and #41 in FY2025; up 5 since FY2021.
49	Environmental Restoration LLC Top agencies EPA (Environmental Protection Agency) DOJ (Department of Justice)	$135,117,079	0.2%	Rank history: #69 in FY2021, #67 in FY2023, not on the FY2024 list and #65 in FY2025; up 20 since FY2021.
50	Loyal Source Government Services LLC Top agencies DHS (Department of Homeland Security) VA (Department of Veterans Affairs) USAF (Department of the Air Force)	$135,030,516	0.2%	Rank history: #31 in FY2021, #30 in FY2023, #37 in FY2024 and #53 in FY2025; down 19 since FY2021.
51	Pond Security Service GMBH Top agencies Army (Department of the Army) DOS (Department of State) DODEA (Department of Defense Education Activity)	$128,738,967	0.2%	Rank history: #54 in FY2021, #58 in FY2023, #66 in FY2024 and #58 in FY2025; up 3 since FY2021.
52	Cherokee Nation Federal Consulting, L.L.C. Top agencies Treasury (Department of the Treasury) HHS (Department of Health and Human Services) Army (Department of the Army)	$122,223,234	0.2%	Rank history: not on the FY2021 list, #82 in FY2023 and not on the FY2024–FY2025 lists; new.
53	CGI Technologies and Solutions Inc. 2 awardees, including CGI Federal Inc. Top agencies DOJ (Department of Justice) DOS (Department of State)	$121,148,729	0.2%	Rank history: not on the FY2021 list, #56 in FY2023 and not on the FY2024–FY2025 lists; up 70 since FY2021.
54	Covenant Aviation Security LLC Top agencies DHS (Department of Homeland Security)	$120,236,904	0.2%	Rank history: #56 in FY2021, #55 in FY2023, #56 in FY2024 and not on the FY2025 list; up 2 since FY2021.
55	Tetra Tech, Inc. 15 awardees, including The Kaizen Company, LLC, Ard, Inc. and Pro-Telligent, LLC Top agencies DOS (Department of State) Army (Department of the Army) USAF (Department of the Air Force)	$114,694,131	0.2%	Rank history: #78 in FY2021, #47 in FY2023, #72 in FY2024 and #68 in FY2025; up 23 since FY2021.
56	M. C. Dean Inc. Through M.c. Dean, Inc. Top agencies AOUSC (Administrative Office of the U.S. Courts) DOD (Department of Defense) GSA (General Services Administration)	$108,965,977	0.2%	Rank history: #66 in FY2021, #62 in FY2023, #63 in FY2024 and #52 in FY2025; up 10 since FY2021.
57	Hydrogeologic, Inc. Top agencies Army (Department of the Army) EPA (Environmental Protection Agency) USAF (Department of the Air Force)	$108,251,846	0.2%	Rank history: #44 in FY2021, #45 in FY2023, #52 in FY2024 and #54 in FY2025; down 13 since FY2021.
58	RSI Entech, LLC Top agencies DOE (Department of Energy)	$104,116,720	0.2%	Rank history: #86 in FY2021, #71 in FY2023, #75 in FY2024 and not on the FY2025 list; up 28 since FY2021.
59	Dzsp 21 LLC Top agencies Navy (Department of the Navy)	$98,985,266	0.2%	Rank history: #62 in FY2021, #59 in FY2023 and not on the FY2024–FY2025 lists; up 3 since FY2021.
60	Sevenson Environmental Services, Inc. Top agencies Army (Department of the Army) EPA (Environmental Protection Agency) Navy (Department of the Navy)	$98,034,311	0.2%	Rank history: #92 in FY2021, #74 in FY2023, #25 in FY2024 and #38 in FY2025; up 32 since FY2021.
61	Johnson Controls Security Solutions LLC 28 awardees, including Johnson Controls Government Systems, LLC, Johnson Controls, Inc. and Johnson Controls Building Automation Systems, LLC Top agencies Navy (Department of the Navy) VA (Department of Veterans Affairs) AOUSC (Administrative Office of the U.S. Courts)	$97,493,761	0.2%	Rank history: #60 in FY2021, #96 in FY2023 and not on the FY2024–FY2025 lists; down 1 since FY2021.
62	Identity Theft Guard Solutions, Inc. Top agencies OPM (Office of Personnel Management) SEC (Securities and Exchange Commission) Treasury (Department of the Treasury)	$94,716,766	0.2%	Rank history: #90 in FY2021, not on the FY2023 list, #82 in FY2024 and not on the FY2025 list; up 28 since FY2021.
63	King & George, LLC 2 awardees, including Invicta Global, LLC Top agencies Navy (Department of the Navy) Army (Department of the Army) GSA (General Services Administration)	$93,795,906	0.2%	Rank history: #72 in FY2021, #73 in FY2023 and not on the FY2024–FY2025 lists; up 9 since FY2021.
64	Loyalty Support Services Top agencies Army (Department of the Army)	$93,299,248	0.2%	Rank history: #65 in FY2021, #68 in FY2023, #73 in FY2024 and #36 in FY2025; up 1 since FY2021.
65	Ch2M Hill Bwxt West Valley, LLC Top agencies DOE (Department of Energy)	$90,434,208	0.1%	Rank history: #64 in FY2021, #75 in FY2023 and not on the FY2024–FY2025 lists; down 1 since FY2021.
66	Melwood Horticultural Training Center, Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy) USDA (Department of Agriculture)	$86,617,607	0.1%	Rank history: #70 in FY2021, #87 in FY2023, #86 in FY2024 and #78 in FY2025; up 4 since FY2021.
67	Ranger Land Systems, Inc. Top agencies DHS (Department of Homeland Security)	$82,214,373	0.1%	Rank history: not on the FY2021 list, #44 in FY2023 and not on the FY2024–FY2025 lists; up 193 since FY2021.
68	Didlake Inc. Top agencies Navy (Department of the Navy) WHS (DOD Washington Headquarters Service) DOE (Department of Energy)	$79,511,402	0.1%	Rank history: #81 in FY2021, #93 in FY2023, #98 in FY2024 and #95 in FY2025; up 13 since FY2021.
69	J.f. Brennan Company, Inc. Top agencies EPA (Environmental Protection Agency) Army (Department of the Army)	$79,324,359	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
70	Koa Lani JV LLC Top agencies Navy (Department of the Navy)	$79,161,267	0.1%	Rank history: not on the FY2021 list, #85 in FY2023, not on the FY2024 list and #94 in FY2025; up 60 since FY2021.
71	Servicesource Inc. Top agencies WHS (DOD Washington Headquarters Service) Treasury (Department of the Treasury) DOJ (Department of Justice)	$77,699,175	0.1%	Rank history: not on the FY2021 list, #86 in FY2023, #92 in FY2024 and #81 in FY2025; up 34 since FY2021.
72	Cook Inlet Region Inc. 11 awardees, including North Wind Portage, Inc., Portsmouth Mission Alliance, LLC and North Wind Site Services LLC Top agencies DOE (Department of Energy) Army (Department of the Army) DOI (Department of the Interior)	$77,423,498	0.1%	Rank history: #33 in FY2021 and not on the FY2023–FY2025 lists; down 39 since FY2021.
73	Diversified Protection Corp Top agencies DHS (Department of Homeland Security) DOL (Department of Labor) DOD (Department of Defense)	$77,165,939	0.1%	Rank history: #74 in FY2021, #95 in FY2023 and not on the FY2024–FY2025 lists; up 1 since FY2021.
74	Hanford Laboratory Management and Integration LLC Top agencies DOE (Department of Energy)	$76,900,323	0.1%	Rank history: not on the FY2021 list, #77 in FY2023, #67 in FY2024 and #67 in FY2025; up 81 since FY2021.
75	Ahtna, Incorporated 7 awardees, including Ahtna Support & Training Services LLC, Ahtna Global LLC and Ahtna Environmental, Inc. Top agencies DHS (Department of Homeland Security) Army (Department of the Army) MDA (DOD Missile Defense Agency)	$76,537,898	0.1%	Rank history: #87 in FY2021 and not on the FY2023–FY2025 lists; up 12 since FY2021.
76	Advanced Technology Systems Company, Inc. (OF Virginia) Top agencies USAF (Department of the Air Force)	$76,465,937	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
77	Fleetcor Technologies Inc. Through Corporate Lodging Consultants, Inc. Top agencies DOS (Department of State) HHS (Department of Health and Human Services) DHS (Department of Homeland Security)	$76,092,187	0.1%	Rank history: #50 in FY2021 and not on the FY2023–FY2025 lists; down 27 since FY2021.
78	Teamstaff Inc. Through DLH Solutions Inc. Top agencies VA (Department of Veterans Affairs)	$75,512,644	0.1%	Rank history: #95 in FY2021, #53 in FY2023, #57 in FY2024 and #73 in FY2025; up 17 since FY2021.
79	Sciolex Corporation Top agencies DHS (Department of Homeland Security)	$74,500,348	0.1%	Rank history: #97 in FY2021 and not on the FY2023–FY2025 lists; up 18 since FY2021.
80	The Dewberry Companies LC Through Dewberry Engineers Inc. Top agencies DHS (Department of Homeland Security)	$72,748,860	0.1%	Rank history: not on the FY2021 list, #60 in FY2023 and not on the FY2024–FY2025 lists; up 183 since FY2021.
81	Vighter LLC Top agencies DHS (Department of Homeland Security) USTRANSCOM (Department of Defense United States Transportation Command) HHS (Department of Health and Human Services)	$70,585,709	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
82	Cape Environmental Management Inc. 3 awardees Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$69,355,848	0.1%	Rank history: #79 in FY2021 and not on the FY2023–FY2025 lists; down 3 since FY2021.
83	Peckham Vocational Industries, Inc. Top agencies DOS (Department of State) DLA (Defense Logistics Agency) HHS (Department of Health and Human Services)	$69,241,537	0.1%	Rank history: #77 in FY2021, #61 in FY2023, #42 in FY2024 and #33 in FY2025; down 6 since FY2021.
84	Golden Svcs, LLC Top agencies DHS (Department of Homeland Security) DOE (Department of Energy) NASA (National Aeronautics and Space Administration)	$68,791,718	0.1%	Rank history: #76 in FY2021 and not on the FY2023–FY2025 lists; down 8 since FY2021.
85	Ciri Development Corporation 3 awardees, including North Wind Site Services, LLC and North Wind Construction Services, LLC Top agencies Army (Department of the Army) DOI (Department of the Interior) DLA (Defense Logistics Agency)	$68,509,521	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
86	Weston Solutions Holdings, Inc. 3 awardees, including Weston Solutions, Inc. Top agencies DLA (Defense Logistics Agency) Army (Department of the Army)	$68,165,790	0.1%	Rank history: not on the FY2021 list, #78 in FY2023, #84 in FY2024 and not on the FY2025 list; up 76 since FY2021.
87	Booz Allen Hamilton Holding Corporation Through Booz Allen Hamilton Inc. Top agencies DOE (Department of Energy) USAF (Department of the Air Force) EPA (Environmental Protection Agency)	$68,163,762	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 69 since FY2021.
88	American Security Programs Inc 5 awardees, including Sos Security LLC and Securadyne Systems Intermediate LLC Top agencies DHS (Department of Homeland Security) DOS (Department of State) GAO (Government Accountability Office)	$68,079,690	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 56 since FY2021.
89	Chimes District of Columbia Inc. Top agencies Army (Department of the Army) WHS (DOD Washington Headquarters Service) USAF (Department of the Air Force)	$66,529,400	0.1%	Rank history: #89 in FY2021 and not on the FY2023–FY2025 lists; unchanged since FY2021.
90	Sourceamerica Top agencies Army (Department of the Army) Treasury (Department of the Treasury) VA (Department of Veterans Affairs)	$66,376,925	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 32 since FY2021.
91	EOD Technology Inc. Through Acuity - Janus Global, LLC Top agencies DOS (Department of State)	$65,790,495	0.1%	Rank history: #99 in FY2021 and not on the FY2023–FY2025 lists; up 8 since FY2021.
92	Nve, Inc. Top agencies DOS (Department of State) Treasury (Department of the Treasury) HHS (Department of Health and Human Services)	$64,322,659	0.1%	Rank history: not on the FY2021 list, not on the FY2023–FY2024 lists and #85 in FY2025; up 59 since FY2021.
93	Facility Services Management, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) DHA (Defense Health Agency)	$64,078,528	0.1%	Rank history: #82 in FY2021, #70 in FY2023, #89 in FY2024 and not on the FY2025 list; down 11 since FY2021.
94	Vendtech-Sgi LLC Top agencies DHS (Department of Homeland Security)	$63,950,584	0.1%	Rank history: #85 in FY2021, #88 in FY2023, #97 in FY2024 and #86 in FY2025; down 9 since FY2021.
95	Oneida Nation 6 awardees, including Sustainment & Restoration Services, LLC, Oneida Total Integrated Enterprises LLC and Mission Support Services, LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) DHS (Department of Homeland Security)	$63,897,322	0.1%	Rank history: not on the FY2021 list, #100 in FY2023 and not on the FY2024–FY2025 lists; up 44 since FY2021.
96	Tiya Services, L.L.C. Top agencies Army (Department of the Army)	$61,031,746	0.1%	Rank history: #94 in FY2021 and not on the FY2023–FY2025 lists; down 2 since FY2021.
97	Teya Enterprises LLC Top agencies Army (Department of the Army) Navy (Department of the Navy) DHS (Department of Homeland Security)	$60,904,580	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 40 since FY2021.
98	Navarro Research and Engineering, Inc. Top agencies DOE (Department of Energy) Army (Department of the Army) USAF (Department of the Air Force)	$60,898,478	0.1%	Rank history: #73 in FY2021, #97 in FY2023, #100 in FY2024 and #98 in FY2025; down 25 since FY2021.
99	Trax International Corporation Top agencies NASA (National Aeronautics and Space Administration)	$60,147,678	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 18 since FY2021.
100	AB Staffing Solutions LLC Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs) Treasury (Department of the Treasury)	$59,953,781	0.1%	Rank history: #83 in FY2021 and not on the FY2023–FY2025 lists; down 17 since FY2021.

Rankings for the codes under NAICS 56

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 $61.8 billion 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 2022 ran Oct 1, 2021 – Sep 30, 2022. 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 FY2021. "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 FY2021 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