Top 100 Contractors in NAICS 488: Support Activities for Transportation, FY2024

Name: Top 100 Contractors in NAICS 488: Support Activities for Transportation, FY2024
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2023 – Sep 30, 2024 Code page on GovTribe

The top 10 won 51% of FY2024 NAICS 488 contract dollars

Contract obligations: $9,832,369,569 Net of deobligations, by contracts coded NAICS 488 or a code under it
Contractors: 1,538 Parent companies with an obligation
Largest contractor: Amentum Services, Inc. $1.39 billion, 13.3% 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	Amentum Services, Inc. 4 awardees Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$1,393,416,076	13.3%	Rank history: #1 in FY2021, #1 in FY2022, #1 in FY2023 and not on the FY2025 list; unchanged since FY2023.
2	V2X, Inc. 2 awardees, including V2X Aerospace LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) NASA (National Aeronautics and Space Administration)	$1,022,364,256	9.7%	Rank history: #18 in FY2021, not on the FY2022–FY2023 lists and #2 in FY2025; returned.
3	M1 Support Services, L.P. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$871,638,641	8.3%	Rank history: #2 in FY2021, #3 in FY2022, #3 in FY2023 and #3 in FY2025; unchanged since FY2023.
4	RTX Corporation 17 awardees, including Rockwell Collins, Inc., Hornet Acquisitionco, LLC and Safran Electronics & Defense, Avionics Usa, LLC Top agencies USAF (Department of the Air Force) DHS (Department of Homeland Security) Navy (Department of the Navy)	$484,053,250	4.6%	Rank history: not on the FY2021–FY2023 lists and #4 in FY2025; new.
5	GDC Middle East Company Top agencies Army (Department of the Army)	$413,682,264	3.9%	Rank history: not on the FY2021–FY2023 lists and #7 in FY2025; new.
6	Crowley Government Services Inc. 3 awardees, including Crowley Logistics, Inc. and Crowley Marine Services, Inc. Top agencies OSD (Office of the Secretary of Defense) Navy (Department of the Navy) DHS (Department of Homeland Security)	$329,700,525	3.1%	Rank history: not on the FY2021–FY2022 lists, #6 in FY2023 and #9 in FY2025; unchanged since FY2023.
7	ManTech International Corporation 3 awardees, including Mantech Advanced Systems International, Inc. and Standard Aero (San Antonio) Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy)	$254,991,710	2.4%	Rank history: not on the FY2021–FY2022 lists, #11 in FY2023 and #13 in FY2025; up 4 since FY2023.
8	The Boeing Company 18 awardees, including Boeing Sikorsky Aircraft Support, LLC, Tapestry Solutions, Inc. and Jeppesen Foreflight, Inc. Top agencies USAF (Department of the Air Force) USSOCOM (United States Special Operations Command) Navy (Department of the Navy)	$238,094,543	2.3%	Rank history: #9 in FY2021, #5 in FY2022, #7 in FY2023 and #6 in FY2025; down 1 since FY2023.
9	International Auto Logistics, LLC Top agencies OSD (Office of the Secretary of Defense) USTRANSCOM (Department of Defense United States Transportation Command)	$196,460,609	1.9%	Rank history: #13 in FY2021, #12 in FY2022, #12 in FY2023 and #12 in FY2025; up 3 since FY2023.
10	Airbus DS Military Aircraft Inc. 2 awardees, including Airbus US Space & Defense Inc. Top agencies Army (Department of the Army) DHS (Department of Homeland Security)	$195,235,944	1.9%	Rank history: not on the FY2021–FY2022 lists, #16 in FY2023 and not on the FY2025 list; up 6 since FY2023.
11	Jpats Logistics Services, LLC Top agencies USAF (Department of the Air Force)	$183,656,066	1.7%	Rank history: not on the FY2021–FY2023 lists and #5 in FY2025; new.
12	Northrop Grumman Systems Corporation 2 awardees Top agencies USAF (Department of the Air Force)	$182,659,451	1.7%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
13	Northrop Grumman Corporation 13 awardees, including Northrop Grumman Systems Corporation and Vinnell Arabia, LLC Top agencies Army (Department of the Army) Navy (Department of the Navy) NASA (National Aeronautics and Space Administration)	$178,522,124	1.7%	Rank history: #7 in FY2021, #4 in FY2022, #4 in FY2023 and #11 in FY2025; down 9 since FY2023.
14	IAP Global Services LLC 2 awardees, including Jpats Logistics Services, LLC Top agencies USAF (Department of the Air Force)	$168,936,659	1.6%	Rank history: #10 in FY2021, #10 in FY2022, #10 in FY2023 and not on the FY2025 list; down 4 since FY2023.
15	Airbus US Space & Defense Inc. Top agencies Army (Department of the Army)	$159,754,051	1.5%	Rank history: not on the FY2021–FY2023 lists and #8 in FY2025; new.
16	Lockheed Martin Corporation 6 awardees, including Sikorsky Aircraft Corporation and Derco Aerospace, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$147,908,004	1.4%	Rank history: #15 in FY2021, #13 in FY2022, #13 in FY2023 and #14 in FY2025; down 3 since FY2023.
17	Amentum Holdings, Inc. Through Amentum Services, Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DHS (Department of Homeland Security)	$140,003,701	1.3%	Rank history: not on the FY2021–FY2023 lists and #1 in FY2025; new.
18	AAR Government Services, Inc. Top agencies DOS (Department of State) Navy (Department of the Navy) USAF (Department of the Air Force)	$136,140,079	1.3%	Rank history: not on the FY2021–FY2023 lists and #10 in FY2025; new.
19	S.C.A. - Shipping Consultants Associated Ltd. Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) Army (Department of the Army)	$112,739,651	1.1%	Rank history: #39 in FY2021, #16 in FY2022, #18 in FY2023 and #16 in FY2025; down 1 since FY2023.
20	Boeing Sikorsky Aircraft Support, LLC Top agencies USSOCOM (United States Special Operations Command)	$95,858,576	0.9%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
21	Robinson Aviation (Rva), Inc. Top agencies DOT (Department of Transportation)	$89,862,241	0.9%	Rank history: #23 in FY2021, #20 in FY2022, #20 in FY2023 and #18 in FY2025; down 1 since FY2023.
22	Textron Inc. 6 awardees, including Airborne Tactical Advantage Co LLC, Textron Aviation Inc. and Able Aerospace Services, Inc. Top agencies Navy (Department of the Navy) Commerce (Department of Commerce) DHS (Department of Homeland Security)	$84,043,656	0.8%	Rank history: #32 in FY2021, #57 in FY2022, #39 in FY2023 and #20 in FY2025; up 17 since FY2023.
23	Aarcorp 4 awardees, including AAR Government Services, Inc., AAR Aircraft Services, Inc. and AAR Supply Chain, Inc. Top agencies DOS (Department of State) Navy (Department of the Navy) DOJ (Department of Justice)	$83,929,524	0.8%	Rank history: #8 in FY2021, #9 in FY2022, #9 in FY2023 and not on the FY2025 list; down 14 since FY2023.
24	Vertex Aerospace LLC 3 awardees, including V2X Aerospace LLC Top agencies Navy (Department of the Navy) NASA (National Aeronautics and Space Administration)	$79,982,151	0.8%	Rank history: #3 in FY2021, #2 in FY2022, #2 in FY2023 and not on the FY2025 list; down 22 since FY2023.
25	Midwest Air Traffic Control Service Inc Top agencies DOT (Department of Transportation) Navy (Department of the Navy)	$77,361,145	0.7%	Rank history: #26 in FY2021, #22 in FY2022, #21 in FY2023 and #21 in FY2025; down 4 since FY2023.
26	Yulista Solutions, LLC Top agencies NASA (National Aeronautics and Space Administration) DOE (Department of Energy)	$76,343,278	0.7%	Rank history: not on the FY2021–FY2022 lists, #30 in FY2023 and #26 in FY2025; up 4 since FY2023.
27	Donjon Marine Co., LLC Top agencies Navy (Department of the Navy) Army (Department of the Army)	$73,435,687	0.7%	Rank history: #44 in FY2021, #55 in FY2022, #43 in FY2023 and not on the FY2025 list; up 16 since FY2023.
28	Leidos Holdings, Inc. Through Leidos, Inc. Top agencies DOT (Department of Transportation)	$70,710,816	0.7%	Rank history: #6 in FY2021, #42 in FY2022, #34 in FY2023 and #22 in FY2025; up 6 since FY2023.
29	Dyncorp International LLC Top agencies Army (Department of the Army) USDA (Department of Agriculture)	$68,936,371	0.7%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
30	Sierra Nevada Company, LLC 4 awardees Top agencies USAF (Department of the Air Force)	$62,365,310	0.6%	Rank history: #16 in FY2021, #17 in FY2022, #17 in FY2023 and #30 in FY2025; down 13 since FY2023.
31	Korean Air Lines Co.,Ltd. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) DCMA (Defense Contract Management Agency)	$58,632,520	0.6%	Rank history: #42 in FY2021, #31 in FY2022, #35 in FY2023 and #41 in FY2025; up 4 since FY2023.
32	Serco Inc 2 awardees Top agencies DOT (Department of Transportation) USAF (Department of the Air Force)	$55,100,526	0.5%	Rank history: not on the FY2021–FY2022 lists, #62 in FY2023 and #39 in FY2025; up 30 since FY2023.
33	Yulista Support Services LLC Top agencies Army (Department of the Army) Navy (Department of the Navy)	$54,818,598	0.5%	Rank history: not on the FY2021–FY2023 lists and #27 in FY2025; new.
34	Omega Aerial Refueling Services, Inc. Top agencies Navy (Department of the Navy)	$52,168,493	0.5%	Rank history: #37 in FY2021, #36 in FY2022, #27 in FY2023 and #29 in FY2025; down 7 since FY2023.
35	Nana Regional Corporation Inc. Through Akima Logistics Services LLC Top agencies USAF (Department of the Air Force)	$48,822,775	0.5%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
36	General Atomics Aeronautical Systems, Inc. Top agencies DHS (Department of Homeland Security)	$48,230,371	0.5%	Rank history: not on the FY2021–FY2023 lists and #23 in FY2025; new.
37	Tyonek Services Overhaul Facility-Stennis, LLC 3 awardees, including Tyonek Global Services LLC Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$47,174,897	0.4%	Rank history: not on the FY2021 list, #33 in FY2022, #19 in FY2023 and #34 in FY2025; down 18 since FY2023.
38	Arrows Edge LLC Top agencies Navy (Department of the Navy)	$46,985,751	0.4%	Rank history: not on the FY2021–FY2022 lists, #42 in FY2023 and #31 in FY2025; up 4 since FY2023.
39	Mantech Advanced Systems International, Inc. Top agencies Army (Department of the Army)	$43,645,630	0.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
40	Pinnacle Solutions LLC Top agencies Army (Department of the Army)	$43,218,456	0.4%	Rank history: not on the FY2021–FY2022 lists, #32 in FY2023 and not on the FY2025 list; down 8 since FY2023.
41	Metrea Strategic Mobility Inc. Top agencies Navy (Department of the Navy)	$43,047,613	0.4%	Rank history: not on the FY2021 list, #29 in FY2022, #36 in FY2023 and #33 in FY2025; down 5 since FY2023.
42	Global Defense Logistics S.R.L. Top agencies Navy (Department of the Navy) Army (Department of the Army) DHS (Department of Homeland Security)	$40,491,625	0.4%	Rank history: #60 in FY2021, #27 in FY2022, #38 in FY2023 and #53 in FY2025; down 4 since FY2023.
43	Homesafe Alliance LLC Top agencies USAF (Department of the Air Force)	$40,445,189	0.4%	Rank history: not on the FY2021 list, #93 in FY2022, #29 in FY2023 and #24 in FY2025; down 14 since FY2023.
44	Global Pcci (Gpc) Top agencies Navy (Department of the Navy) Army (Department of the Army)	$39,621,205	0.4%	Rank history: #30 in FY2021, #24 in FY2022, #26 in FY2023 and #25 in FY2025; down 18 since FY2023.
45	Marshall of Cambridge Aerospace Limited 2 awardees Top agencies Navy (Department of the Navy)	$39,502,734	0.4%	Rank history: #77 in FY2021, #38 in FY2022, #65 in FY2023 and #43 in FY2025; up 20 since FY2023.
46	Kay and Associates, Inc. Top agencies Navy (Department of the Navy)	$34,787,972	0.3%	Rank history: #21 in FY2021, #19 in FY2022, #22 in FY2023 and #17 in FY2025; down 24 since FY2023.
47	Inchcape Shipping Services Dubai LLC Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) Army (Department of the Army)	$27,975,764	0.3%	Rank history: not on the FY2021 list, #43 in FY2022, #37 in FY2023 and #47 in FY2025; down 10 since FY2023.
48	Versability Resources, Inc. Top agencies Navy (Department of the Navy)	$25,559,390	0.2%	Rank history: #57 in FY2021, #30 in FY2022, #41 in FY2023 and #44 in FY2025; down 7 since FY2023.
49	PKL Services, Inc. Top agencies USAF (Department of the Air Force)	$25,033,504	0.2%	Rank history: #56 in FY2021, #34 in FY2022, #44 in FY2023 and #48 in FY2025; down 5 since FY2023.
50	Calista Corp 4 awardees, including Yulista Support Services LLC Top agencies Army (Department of the Army) Navy (Department of the Navy)	$23,948,213	0.2%	Rank history: #14 in FY2021, #11 in FY2022, #14 in FY2023 and not on the FY2025 list; down 36 since FY2023.
51	Alpha Marine Services LLC Top agencies Navy (Department of the Navy)	$23,755,929	0.2%	Rank history: #46 in FY2021, #37 in FY2022, #45 in FY2023 and #38 in FY2025; down 6 since FY2023.
52	L3Harris Technologies, Inc. 8 awardees, including L3Harris Technologies Integrated Systems L.P., Acron Aviation, Inc. and Aviation Communication & Surveillance Systems LLC Top agencies Navy (Department of the Navy) Commerce (Department of Commerce) DHS (Department of Homeland Security)	$23,707,727	0.2%	Rank history: #36 in FY2021, #48 in FY2022, #85 in FY2023 and #32 in FY2025; up 33 since FY2023.
53	Moran Transportation Company 2 awardees, including Moran Towing Corporation Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security)	$22,572,813	0.2%	Rank history: #73 in FY2021, #54 in FY2022, #49 in FY2023 and #56 in FY2025; down 4 since FY2023.
54	National Technologies Associates Inc. Top agencies Navy (Department of the Navy)	$22,206,077	0.2%	Rank history: not on the FY2021–FY2023 lists and #40 in FY2025; new.
55	Rolls-Royce Solutions America Inc. 2 awardees, including Rolls-Royce Corporation and Rolls-Royce Deutschland Ltd & Co KG Top agencies DHS (Department of Homeland Security) DOT (Department of Transportation)	$21,542,142	0.2%	Rank history: not on the FY2021–FY2023 lists and #49 in FY2025; new.
56	Envision Industries, Inc. Through Envision Xpress Inc. Top agencies DLA (Defense Logistics Agency)	$21,504,856	0.2%	Rank history: not on the FY2021 list, #83 in FY2022, #31 in FY2023 and not on the FY2025 list; down 25 since FY2023.
57	Waypoint LLC Top agencies Navy (Department of the Navy) Army (Department of the Army) DHS (Department of Homeland Security)	$20,605,834	0.2%	Rank history: not on the FY2021 list, #49 in FY2022, #52 in FY2023 and #36 in FY2025; down 5 since FY2023.
58	Tone Communication Services, LLC Through Cooper / Ports America LLC Top agencies Army (Department of the Army)	$20,480,788	0.2%	Rank history: not on the FY2021–FY2023 lists and #37 in FY2025; new.
59	General Atomic Technologies Corporation Through General Atomics Aeronautical Systems, Inc. Top agencies DHS (Department of Homeland Security) Navy (Department of the Navy)	$20,003,824	0.2%	Rank history: #19 in FY2021, #15 in FY2022, #15 in FY2023 and not on the FY2025 list; down 44 since FY2023.
60	Akima Logistics Services LLC Top agencies USAF (Department of the Air Force)	$18,829,000	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
61	SAFRAN 8 awardees, including Safran Helicopter Engines Usa, Inc., Safran Aerosystems Services Americas LLC and Safran Electronics & Defense, Avionics Usa, LLC Top agencies DHS (Department of Homeland Security) Navy (Department of the Navy) DLA (Defense Logistics Agency)	$18,350,299	0.2%	Rank history: not on the FY2021–FY2023 lists and #45 in FY2025; new.
62	Louis Berger U.S. Inc. Through VGS Aircraft Services, Inc. Top agencies USAF (Department of the Air Force)	$17,534,919	0.2%	Rank history: #52 in FY2021, #40 in FY2022, #57 in FY2023 and not on the FY2025 list; down 5 since FY2023.
63	B3 Enterprises LLC Top agencies Army (Department of the Army)	$17,142,033	0.2%	Rank history: not on the FY2021 list, #35 in FY2022, #55 in FY2023 and #52 in FY2025; down 8 since FY2023.
64	Delaware River Stevedores, Inc. Top agencies Army (Department of the Army)	$16,826,452	0.2%	Rank history: not on the FY2021–FY2023 lists and #72 in FY2025; up 143 since FY2023.
65	Sabena Aerospace Engineering Top agencies USAF (Department of the Air Force)	$16,312,219	0.2%	Rank history: not on the FY2021–FY2022 lists, #68 in FY2023 and #35 in FY2025; up 3 since FY2023.
66	Geranoi Arapis EE Top agencies Army (Department of the Army)	$15,652,399	0.1%	Rank history: not on the FY2021–FY2022 lists, #74 in FY2023 and not on the FY2025 list; up 8 since FY2023.
67	Cooper/Ports America LLC Top agencies Army (Department of the Army)	$15,613,205	0.1%	Rank history: not on the FY2021–FY2022 lists, #47 in FY2023 and not on the FY2025 list; down 20 since FY2023.
68	National Air Cargo Group, Inc. Top agencies USAF (Department of the Air Force)	$14,673,867	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
69	Parsh Marine (S) Pte. Ltd. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$14,603,119	0.1%	Rank history: not on the FY2021 list, #68 in FY2022, #59 in FY2023 and #79 in FY2025; down 10 since FY2023.
70	Calspan, LLC Top agencies USAF (Department of the Air Force) WHS (DOD Washington Headquarters Service)	$14,574,137	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
71	Akima Facilities Operations LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$14,173,387	0.1%	Rank history: not on the FY2021–FY2023 lists and #59 in FY2025; up 69 since FY2023.
72	Pole Star Space Applications (USA) Inc. Top agencies DHS (Department of Homeland Security)	$13,996,510	0.1%	Rank history: not on the FY2021–FY2023 lists and #69 in FY2025; up 408 since FY2023.
73	Africa Global Logistics Mocambique, S.A Top agencies USAID (US Agency for International Development)	$13,500,000	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
74	SSA Atlantic LLC Top agencies Army (Department of the Army)	$13,280,246	0.1%	Rank history: #68 in FY2021, #82 in FY2022, #75 in FY2023 and #62 in FY2025; up 1 since FY2023.
75	MD Helicopters, LLC Top agencies Army (Department of the Army)	$13,251,637	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
76	Verbrugge Zeeland Terminals B.V. Top agencies Army (Department of the Army)	$12,824,694	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 59 since FY2023.
77	Jet Support Services, Inc. Top agencies DOT (Department of Transportation)	$11,966,905	0.1%	Rank history: not on the FY2021 list, #78 in FY2022, #72 in FY2023 and not on the FY2025 list; down 5 since FY2023.
78	Rhenus Midgard GMBH & Co. KG Top agencies Army (Department of the Army)	$11,023,921	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
79	Great Eastern Group, Inc. Top agencies Navy (Department of the Navy)	$10,627,624	0.1%	Rank history: #67 in FY2021, #69 in FY2022, #66 in FY2023 and #85 in FY2025; down 13 since FY2023.
80	Military Services Australia Pty. Ltd. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$10,463,464	0.1%	Rank history: not on the FY2021–FY2022 lists, #69 in FY2023 and #71 in FY2025; down 11 since FY2023.
81	Kbr, Inc. Through KBR Wyle Services, LLC Top agencies Navy (Department of the Navy)	$10,388,162	0.1%	Rank history: #43 in FY2021, #39 in FY2022, #48 in FY2023 and not on the FY2025 list; down 33 since FY2023.
82	Rethmann AG & Co. KG Through Rhenus Midgard GMBH & Co. KG Top agencies Army (Department of the Army)	$10,381,942	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 43 since FY2023.
83	Pacific Layberthing South, LLC Top agencies DOT (Department of Transportation)	$10,173,398	0.1%	Rank history: #98 in FY2021, #47 in FY2022, #64 in FY2023 and #58 in FY2025; down 19 since FY2023.
84	Triad Logistics Services Corporation Top agencies USAF (Department of the Air Force)	$9,944,327	0.1%	Rank history: #63 in FY2021, #65 in FY2022, #63 in FY2023 and #66 in FY2025; down 21 since FY2023.
85	Downie Jones Ship Stores Limited Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security)	$9,718,370	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 23 since FY2023.
86	Tyonek Global Services LLC Top agencies Army (Department of the Army)	$9,670,000	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
87	Bowhead Marine Support Services, LLC Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security)	$9,540,524	0.1%	Rank history: #81 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; returned.
88	DE LA Fuente Construction Inc. Top agencies Navy (Department of the Navy)	$9,517,961	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 25 since FY2023.
89	American Roll-on Roll-Off Carrier LLC 3 awardees, including Transcar GMBH Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$9,284,351	0.1%	Rank history: #61 in FY2021, not on the FY2022 list, #58 in FY2023 and not on the FY2025 list; down 31 since FY2023.
90	Professional Contract Services, Inc. Top agencies USAF (Department of the Air Force)	$8,992,073	0.1%	Rank history: #96 in FY2021, #71 in FY2022, #76 in FY2023 and #75 in FY2025; down 14 since FY2023.
91	Ems Shipping & Trading GMBH Top agencies Army (Department of the Army) Navy (Department of the Navy)	$8,917,129	0.1%	Rank history: not on the FY2021–FY2023 lists and #88 in FY2025; up 52 since FY2023.
92	Oaktree Capital Management L.P. 2 awardees, including Marine Terminals Corp and Ports America Inc. Top agencies Army (Department of the Army)	$8,569,004	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 136 since FY2023.
93	Bct-Baltycki Terminal Kontenerowy SP. Z O.o. Top agencies Army (Department of the Army)	$8,561,655	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
94	Subaru Corporation Top agencies Navy (Department of the Navy)	$8,351,721	0.1%	Rank history: #75 in FY2021, #62 in FY2022, #67 in FY2023 and not on the FY2025 list; down 27 since FY2023.
95	Draken International, LLC Top agencies Navy (Department of the Navy)	$8,285,561	0.1%	Rank history: #84 in FY2021, #72 in FY2022, #78 in FY2023 and #90 in FY2025; down 17 since FY2023.
96	Rsi-Quantitech JV LLC Top agencies Army (Department of the Army)	$8,048,752	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
97	Avmac LLC Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security)	$7,951,230	0.1%	Rank history: not on the FY2021–FY2022 lists, #24 in FY2023 and not on the FY2025 list; down 73 since FY2023.
98	VT Milcom Inc. Through National Technologies Associates, Inc. Top agencies Navy (Department of the Navy)	$7,775,682	0.1%	Rank history: #41 in FY2021, #53 in FY2022, #56 in FY2023 and not on the FY2025 list; down 42 since FY2023.
99	Talton Marine Terminal, LLC Top agencies DOT (Department of Transportation)	$7,731,927	0.1%	Rank history: not on the FY2021–FY2022 lists, #86 in FY2023 and #60 in FY2025; down 13 since FY2023.
100	Leonardo S.p.A. 4 awardees, including DRS Network & Imaging Systems LLC Top agencies DHS (Department of Homeland Security) Army (Department of the Army)	$7,718,693	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 14 since FY2023.

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100 of 1,538 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 488

Code	Net obligations	Largest contractor
4881 Support Activities for Air Transportation	$7,961,374,948	Amentum Services, Inc.
4883 Support Activities for Water Transportation	$902,141,321	S.C.A. - Shipping Consultants Associated Ltd.
4889 Other Support Activities for Transportation	$524,647,700	ManTech International Corporation
4885 Freight Transportation Arrangement	$408,477,026	Crowley Government Services Inc.
4882 Support Activities for Rail Transportation	$18,170,920	Alltrack, Inc.
4884 Support Activities for Road Transportation	$17,557,654	Professional Contract Services, Inc.

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 $10.5 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 2024 ran Oct 1, 2023 – Sep 30, 2024. 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 FY2023. "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 FY2023 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 488 contractors in FY2024?

1. Amentum Services, Inc. ($1.39B), 2. V2X, Inc. ($1.02B), 3. M1 Support Services, L.P. ($872M), 4. RTX Corporation ($484M), 5. GDC Middle East Company ($414M), 6. Crowley Government Services Inc. ($330M), 7. ManTech International Corporation ($255M), 8. The Boeing Company ($238M), 9. International Auto Logistics, LLC ($196M), 10. Airbus DS Military Aircraft Inc. ($195M).

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