Top 100 Contractors in NAICS 488: Support Activities for Transportation, FY2023

Name: Top 100 Contractors in NAICS 488: Support Activities for Transportation, FY2023
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2022 – Sep 30, 2023 Code page on GovTribe

The top 10 won 58% of FY2023 NAICS 488 contract dollars

Contract obligations: $8,984,711,453 Net of deobligations, by contracts coded NAICS 488 or a code under it
Contractors: 1,525 Parent companies with an obligation
Largest contractor: Amentum Services, Inc. $1.45 billion, 15.0% 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	Amentum Services, Inc. 3 awardees, including Dyncorp International LLC Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$1,451,660,799	15.0%	Rank history: #1 in FY2021, #1 in FY2022, #1 in FY2024 and not on the FY2025 list; unchanged since FY2022.
2	Vertex Aerospace LLC 4 awardees, including V2X Aerospace LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) NASA (National Aeronautics and Space Administration)	$944,333,074	9.8%	Rank history: #3 in FY2021, #2 in FY2022, #24 in FY2024 and not on the FY2025 list; unchanged since FY2022.
3	M1 Support Services, L.P. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$847,401,572	8.8%	Rank history: #2 in FY2021, #3 in FY2022, #3 in FY2024 and #3 in FY2025; unchanged since FY2022.
4	Northrop Grumman Corporation 13 awardees, including Northrop Grumman Systems Corporation and Vinnell Arabia, LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$466,574,346	4.8%	Rank history: #7 in FY2021, #4 in FY2022, #13 in FY2024 and #11 in FY2025; unchanged since FY2022.
5	RTX Corporation 18 awardees, including Rockwell Collins, Inc., Safran Electronics & Defense, Avionics Usa, LLC and Hamilton Sundstrand Customer Support Center Maastricht B.V. Top agencies USAF (Department of the Air Force) DHS (Department of Homeland Security) DLA (Defense Logistics Agency)	$435,103,490	4.5%	Rank history: #4 in FY2021, #6 in FY2022 and not on the FY2024–FY2025 lists; up 1 since FY2022.
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) Army (Department of the Army) Navy (Department of the Navy)	$395,513,627	4.1%	Rank history: not on the FY2021–FY2022 lists, #6 in FY2024 and #9 in FY2025; new.
7	The Boeing Company 11 awardees, including Boeing Sikorsky Aircraft Support, LLC, Boeing Aerospace Operations, Inc. and Tapestry Solutions, Inc. Top agencies USAF (Department of the Air Force) USSOCOM (United States Special Operations Command) Navy (Department of the Navy)	$331,524,375	3.4%	Rank history: #9 in FY2021, #5 in FY2022, #8 in FY2024 and #6 in FY2025; down 2 since FY2022.
8	Airbus Americas Inc. 4 awardees, including Airbus US Space & Defense Inc., Airbus Helicopters, Inc. and Aviation Defense Service Top agencies Army (Department of the Army) Navy (Department of the Navy) NASA (National Aeronautics and Space Administration)	$255,906,557	2.6%	Rank history: #11 in FY2021, #8 in FY2022 and not on the FY2024–FY2025 lists; unchanged since FY2022.
9	Aarcorp 4 awardees, including AAR Government Services, Inc., AAR Aircraft Services, Inc. and AAR Allen Services, Inc. Top agencies DOS (Department of State) Navy (Department of the Navy) USAF (Department of the Air Force)	$244,343,841	2.5%	Rank history: #8 in FY2021, #9 in FY2022, #23 in FY2024 and not on the FY2025 list; unchanged since FY2022.
10	IAP Global Services LLC Through Jpats Logistics Services, LLC Top agencies USAF (Department of the Air Force)	$232,471,026	2.4%	Rank history: #10 in FY2021, #10 in FY2022, #14 in FY2024 and not on the FY2025 list; unchanged since FY2022.
11	Mantech International Corporation Through Mantech Advanced Systems International, Inc. Top agencies Army (Department of the Army)	$209,888,425	2.2%	Rank history: not on the FY2021–FY2022 lists, #7 in FY2024 and #13 in FY2025; up 93 since FY2022.
12	International Auto Logistics, LLC Top agencies OSD (Office of the Secretary of Defense) USTRANSCOM (Department of Defense United States Transportation Command)	$177,104,539	1.8%	Rank history: #13 in FY2021, #12 in FY2022, #9 in FY2024 and #12 in FY2025; unchanged since FY2022.
13	Lockheed Martin Corporation 6 awardees, including Sikorsky Aircraft Corporation Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$152,907,711	1.6%	Rank history: #15 in FY2021, #13 in FY2022, #16 in FY2024 and #14 in FY2025; unchanged since FY2022.
14	Calista Corp 4 awardees, including Yulista Support Services LLC and Yulista Integrated Solutions, LLC Top agencies Army (Department of the Army) Navy (Department of the Navy) DARPA (Defense Advanced Research Projects Agency)	$131,502,682	1.4%	Rank history: #14 in FY2021, #11 in FY2022, #50 in FY2024 and not on the FY2025 list; down 3 since FY2022.
15	General Atomic Technologies Corporation Through General Atomics Aeronautical Systems, Inc. Top agencies DHS (Department of Homeland Security) Navy (Department of the Navy)	$113,598,941	1.2%	Rank history: #19 in FY2021, #15 in FY2022, #59 in FY2024 and not on the FY2025 list; unchanged since FY2022.
16	Airbus DS Military Aircraft Inc. 4 awardees, including Airbus US Space & Defense Inc., Aviation Defense Service and Europavia American Service Corp Top agencies Army (Department of the Army) DHS (Department of Homeland Security) Navy (Department of the Navy)	$113,287,224	1.2%	Rank history: not on the FY2021–FY2022 lists, #10 in FY2024 and not on the FY2025 list; new.
17	Sierra Nevada Company, LLC 2 awardees Top agencies USAF (Department of the Air Force)	$103,398,375	1.1%	Rank history: #16 in FY2021, #17 in FY2022, #30 in FY2024 and #30 in FY2025; unchanged since FY2022.
18	S.C.A. - Shipping Consultants Associated Ltd. Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) Army (Department of the Army)	$97,120,291	1.0%	Rank history: #39 in FY2021, #16 in FY2022, #19 in FY2024 and #16 in FY2025; down 2 since FY2022.
19	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)	$82,498,331	0.9%	Rank history: not on the FY2021 list, #33 in FY2022, #37 in FY2024 and #34 in FY2025; up 14 since FY2022.
20	Robinson Aviation (Rva), Inc. Top agencies DOT (Department of Transportation)	$80,524,505	0.8%	Rank history: #23 in FY2021, #20 in FY2022, #21 in FY2024 and #18 in FY2025; unchanged since FY2022.
21	Midwest Air Traffic Control Service Inc Top agencies DOT (Department of Transportation) Navy (Department of the Navy)	$72,688,298	0.8%	Rank history: #26 in FY2021, #22 in FY2022, #25 in FY2024 and #21 in FY2025; up 1 since FY2022.
22	Kay and Associates, Inc. Top agencies Navy (Department of the Navy)	$65,965,424	0.7%	Rank history: #21 in FY2021, #19 in FY2022, #46 in FY2024 and #17 in FY2025; down 3 since FY2022.
23	PAE Government Services Inc. 2 awardees, including PAE Aviation and Technical Services LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$65,162,884	0.7%	Rank history: #12 in FY2021, #14 in FY2022 and not on the FY2024–FY2025 lists; down 9 since FY2022.
24	Avmac LLC Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security)	$65,134,084	0.7%	Rank history: not on the FY2021–FY2022 lists, #97 in FY2024 and not on the FY2025 list; new.
25	Nana Regional Corporation Inc 3 awardees, including Akima Logistics Services LLC, Akima Technical Solutions LLC and Akima Support Operations, LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$61,366,014	0.6%	Rank history: #29 in FY2021, #25 in FY2022 and not on the FY2024–FY2025 lists; unchanged since FY2022.
26	Global Pcci (Gpc) Top agencies Navy (Department of the Navy)	$60,426,912	0.6%	Rank history: #30 in FY2021, #24 in FY2022, #44 in FY2024 and #25 in FY2025; down 2 since FY2022.
27	Omega Aerial Refueling Services, Inc. Top agencies Navy (Department of the Navy)	$58,276,539	0.6%	Rank history: #37 in FY2021, #36 in FY2022, #34 in FY2024 and #29 in FY2025; up 9 since FY2022.
28	Airborne Tactical Advantage Co LLC Top agencies Navy (Department of the Navy)	$53,791,477	0.6%	Rank history: #27 in FY2021, #18 in FY2022 and not on the FY2024–FY2025 lists; down 10 since FY2022.
29	Homesafe Alliance LLC Top agencies USAF (Department of the Air Force)	$48,011,836	0.5%	Rank history: not on the FY2021 list, #93 in FY2022, #43 in FY2024 and #24 in FY2025; up 64 since FY2022.
30	Yulista Solutions, LLC Top agencies NASA (National Aeronautics and Space Administration)	$48,000,687	0.5%	Rank history: not on the FY2021–FY2022 lists, #26 in FY2024 and #26 in FY2025; new.
31	Envision Industries, Inc. Through Envision Xpress Inc. Top agencies DLA (Defense Logistics Agency)	$44,426,416	0.5%	Rank history: not on the FY2021 list, #83 in FY2022, #56 in FY2024 and not on the FY2025 list; up 52 since FY2022.
32	Pinnacle Solutions LLC Top agencies Army (Department of the Army)	$42,532,698	0.4%	Rank history: not on the FY2021–FY2022 lists, #40 in FY2024 and not on the FY2025 list; new.
33	Serco North America (Holdings) Inc 2 awardees, including Serco Inc. Top agencies DOT (Department of Transportation) USAF (Department of the Air Force)	$38,645,291	0.4%	Rank history: #34 in FY2021, #26 in FY2022 and not on the FY2024–FY2025 lists; down 7 since FY2022.
34	Leidos Holdings, Inc. 3 awardees, including Leidos, Inc. Top agencies DOT (Department of Transportation)	$38,341,736	0.4%	Rank history: #6 in FY2021, #42 in FY2022, #28 in FY2024 and #22 in FY2025; up 8 since FY2022.
35	Korean Air Lines Co.,Ltd. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) DCMA (Defense Contract Management Agency)	$33,972,524	0.4%	Rank history: #42 in FY2021, #31 in FY2022, #31 in FY2024 and #41 in FY2025; down 4 since FY2022.
36	Metrea Strategic Mobility Inc. Top agencies Navy (Department of the Navy)	$32,752,342	0.3%	Rank history: not on the FY2021 list, #29 in FY2022, #41 in FY2024 and #33 in FY2025; down 7 since FY2022.
37	Inchcape Shipping Services Dubai LLC Top agencies Navy (Department of the Navy) Army (Department of the Army) DHS (Department of Homeland Security)	$28,638,303	0.3%	Rank history: not on the FY2021 list, #43 in FY2022, #47 in FY2024 and #47 in FY2025; up 6 since FY2022.
38	Global Defense Logistics S.R.L. Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security)	$27,939,546	0.3%	Rank history: #60 in FY2021, #27 in FY2022, #42 in FY2024 and #53 in FY2025; down 11 since FY2022.
39	Textron Inc. 6 awardees, including Airborne Tactical Advantage Co LLC, Able Aerospace Services, Inc. and Textron Aviation Defense LLC Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) DOT (Department of Transportation)	$25,053,179	0.3%	Rank history: #32 in FY2021, #57 in FY2022, #22 in FY2024 and #20 in FY2025; up 18 since FY2022.
40	Walsh Federal LLC Top agencies Navy (Department of the Navy)	$24,929,000	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
41	Versability Resources, Inc. Top agencies Navy (Department of the Navy)	$24,905,847	0.3%	Rank history: #57 in FY2021, #30 in FY2022, #48 in FY2024 and #44 in FY2025; down 11 since FY2022.
42	Arrows Edge LLC Top agencies Navy (Department of the Navy)	$24,793,521	0.3%	Rank history: not on the FY2021–FY2022 lists, #38 in FY2024 and #31 in FY2025; new.
43	Donjon Marine Co., LLC Top agencies Navy (Department of the Navy)	$23,483,310	0.2%	Rank history: #44 in FY2021, #55 in FY2022, #27 in FY2024 and not on the FY2025 list; up 12 since FY2022.
44	PKL Services, Inc. Top agencies USAF (Department of the Air Force)	$23,100,703	0.2%	Rank history: #56 in FY2021, #34 in FY2022, #49 in FY2024 and #48 in FY2025; down 10 since FY2022.
45	Alpha Marine Services LLC Top agencies Navy (Department of the Navy)	$22,628,171	0.2%	Rank history: #46 in FY2021, #37 in FY2022, #51 in FY2024 and #38 in FY2025; down 8 since FY2022.
46	Rolls-Royce Military Aero Engines Ltd 2 awardees, including Rolls-Royce Corporation and Rolls-Royce Deutschland Ltd & Co KG Top agencies DHS (Department of Homeland Security) DOT (Department of Transportation)	$21,969,957	0.2%	Rank history: #49 in FY2021, #90 in FY2022 and not on the FY2024–FY2025 lists; up 44 since FY2022.
47	Cooper/Ports America LLC Top agencies Army (Department of the Army)	$21,959,481	0.2%	Rank history: not on the FY2021–FY2022 lists, #67 in FY2024 and not on the FY2025 list; new.
48	Kbr, Inc. 2 awardees, including KBR Wyle Services, LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$20,023,955	0.2%	Rank history: #43 in FY2021, #39 in FY2022, #81 in FY2024 and not on the FY2025 list; down 9 since FY2022.
49	Moran Transportation Company 3 awardees, including Moran Towing Corporation Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security)	$19,739,777	0.2%	Rank history: #73 in FY2021, #54 in FY2022, #53 in FY2024 and #56 in FY2025; up 5 since FY2022.
50	York Precision Machining and Hydraulics, LLC Top agencies DLA (Defense Logistics Agency)	$19,574,601	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 333 since FY2022.
51	SAFRAN 8 awardees, including Safran Helicopter Engines Usa, Inc., Safran Electronics & Defense, Avionics Usa, LLC and Safran Aerosystems Services Americas LLC Top agencies DHS (Department of Homeland Security) DLA (Defense Logistics Agency)	$18,676,966	0.2%	Rank history: #45 in FY2021, #45 in FY2022 and not on the FY2024–FY2025 lists; down 6 since FY2022.
52	Waypoint LLC Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) Commerce (Department of Commerce)	$17,427,516	0.2%	Rank history: not on the FY2021 list, #49 in FY2022, #57 in FY2024 and #36 in FY2025; down 3 since FY2022.
53	Seaward Marine Services, LLC Top agencies Navy (Department of the Navy)	$17,098,194	0.2%	Rank history: #38 in FY2021, #28 in FY2022 and not on the FY2024–FY2025 lists; down 25 since FY2022.
54	Estes Express Lines Top agencies DHS (Department of Homeland Security)	$17,047,490	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 79 since FY2022.
55	B3 Enterprises LLC Top agencies Army (Department of the Army)	$16,627,678	0.2%	Rank history: not on the FY2021 list, #35 in FY2022, #63 in FY2024 and #52 in FY2025; down 20 since FY2022.
56	VT Milcom Inc. Through National Technologies Associates, Inc. Top agencies Navy (Department of the Navy)	$16,617,934	0.2%	Rank history: #41 in FY2021, #53 in FY2022, #98 in FY2024 and not on the FY2025 list; down 3 since FY2022.
57	Louis Berger U.S. Inc. Through VGS Aircraft Services, Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$15,918,586	0.2%	Rank history: #52 in FY2021, #40 in FY2022, #62 in FY2024 and not on the FY2025 list; down 17 since FY2022.
58	American Roll-on Roll-Off Carrier LLC 3 awardees, including Transcar GMBH and American Roll-On Roll-Off Carrier Group, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$15,606,888	0.2%	Rank history: #61 in FY2021, not on the FY2022 list, #89 in FY2024 and not on the FY2025 list; up 60 since FY2022.
59	Parsh Marine (S) Pte. Ltd. Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security)	$15,043,199	0.2%	Rank history: not on the FY2021 list, #68 in FY2022, #69 in FY2024 and #79 in FY2025; up 9 since FY2022.
60	Nippi Corporation Top agencies Navy (Department of the Navy)	$15,018,075	0.2%	Rank history: #54 in FY2021, #44 in FY2022 and not on the FY2024–FY2025 lists; down 16 since FY2022.
61	Pole Star Space Applications Limited Through Pole Star Space Applications USA Inc. Top agencies DHS (Department of Homeland Security)	$14,087,320	0.1%	Rank history: #99 in FY2021, #85 in FY2022 and not on the FY2024–FY2025 lists; up 24 since FY2022.
62	Serco Inc Top agencies DOT (Department of Transportation)	$13,308,224	0.1%	Rank history: not on the FY2021–FY2022 lists, #32 in FY2024 and #39 in FY2025; new.
63	Triad Logistics Services Corporation Top agencies USAF (Department of the Air Force)	$12,944,685	0.1%	Rank history: #63 in FY2021, #65 in FY2022, #84 in FY2024 and #66 in FY2025; up 2 since FY2022.
64	Pacific Layberthing South, LLC Top agencies DOT (Department of Transportation)	$11,819,934	0.1%	Rank history: #98 in FY2021, #47 in FY2022, #83 in FY2024 and #58 in FY2025; down 17 since FY2022.
65	Marshall of Cambridge Aerospace Limited Top agencies Navy (Department of the Navy)	$11,688,455	0.1%	Rank history: #77 in FY2021, #38 in FY2022, #45 in FY2024 and #43 in FY2025; down 27 since FY2022.
66	Great Eastern Group, Inc. Top agencies Navy (Department of the Navy)	$11,277,731	0.1%	Rank history: #67 in FY2021, #69 in FY2022, #79 in FY2024 and #85 in FY2025; up 3 since FY2022.
67	Subaru Corporation Top agencies Navy (Department of the Navy)	$10,839,239	0.1%	Rank history: #75 in FY2021, #62 in FY2022, #94 in FY2024 and not on the FY2025 list; down 5 since FY2022.
68	Sabena Aerospace Engineering Top agencies USAF (Department of the Air Force)	$10,802,648	0.1%	Rank history: not on the FY2021–FY2022 lists, #65 in FY2024 and #35 in FY2025; new.
69	Military Services Australia Pty. Ltd. Top agencies Navy (Department of the Navy) Army (Department of the Army) DHS (Department of Homeland Security)	$10,513,840	0.1%	Rank history: not on the FY2021–FY2022 lists, #80 in FY2024 and #71 in FY2025; up 82 since FY2022.
70	Bollore Transport & Logistics RDC SA 2 awardees, including Africa Global Logistics Mocambique, S.A and Ceva Air & Ocean USA Inc. Top agencies USAID (US Agency for International Development)	$10,012,669	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 71 since FY2022.
71	Alisud - Gesac Handling - Servisair 2 - Scarl Through Algese S.R.L. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$9,641,030	0.1%	Rank history: #79 in FY2021, #50 in FY2022 and not on the FY2024–FY2025 lists; down 21 since FY2022.
72	Jet Support Services, Inc. Top agencies DOT (Department of Transportation)	$9,480,890	0.1%	Rank history: not on the FY2021 list, #78 in FY2022, #77 in FY2024 and not on the FY2025 list; up 6 since FY2022.
73	Black Bull Group Inc. Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) Commerce (Department of Commerce)	$9,430,250	0.1%	Rank history: not on the FY2021 list, #81 in FY2022 and not on the FY2024–FY2025 lists; up 8 since FY2022.
74	Geranoi Arapis EE Top agencies Army (Department of the Army)	$9,180,322	0.1%	Rank history: not on the FY2021–FY2022 lists, #66 in FY2024 and not on the FY2025 list; up 40 since FY2022.
75	SSA Atlantic LLC Top agencies Army (Department of the Army)	$8,935,324	0.1%	Rank history: #68 in FY2021, #82 in FY2022, #74 in FY2024 and #62 in FY2025; up 7 since FY2022.
76	Professional Contract Services, Inc. Top agencies USAF (Department of the Air Force)	$8,752,820	0.1%	Rank history: #96 in FY2021, #71 in FY2022, #90 in FY2024 and #75 in FY2025; down 5 since FY2022.
77	Metson Marine Inc. Through Metson Marine Services, Inc. Top agencies Navy (Department of the Navy)	$8,719,013	0.1%	Rank history: #71 in FY2021, #61 in FY2022 and not on the FY2024–FY2025 lists; down 16 since FY2022.
78	Draken International, LLC Top agencies Navy (Department of the Navy)	$8,160,817	0.1%	Rank history: #84 in FY2021, #72 in FY2022, #95 in FY2024 and #90 in FY2025; down 6 since FY2022.
79	Maccs-Easi JV 1 LLC Top agencies USAF (Department of the Air Force)	$7,307,414	0.1%	Rank history: #83 in FY2021, #76 in FY2022 and not on the FY2024–FY2025 lists; down 3 since FY2022.
80	Toll Remote Logistics PTY Ltd Top agencies Navy (Department of the Navy)	$7,186,598	0.1%	Rank history: not on the FY2021 list, #87 in FY2022 and not on the FY2024–FY2025 lists; up 7 since FY2022.
81	C2G, Ltd Co. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$7,171,851	0.1%	Rank history: #88 in FY2021, #97 in FY2022, not on the FY2024 list and #86 in FY2025; up 16 since FY2022.
82	Yulista Contract Services LLC Top agencies Army (Department of the Army)	$7,137,669	0.1%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #46 in FY2025; new.
83	CMA CGM 2 awardees, including American President Lines, LLC and Circle Freight International - Bahrain Co. W.l.l Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$6,913,173	0.1%	Rank history: not on the FY2021 list, #98 in FY2022 and not on the FY2024–FY2025 lists; up 15 since FY2022.
84	Seabulk International Inc. 2 awardees, including E.n. Bisso & Son Towing, Inc. and Seabulk Logistics Services LLC Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security)	$6,781,660	0.1%	Rank history: not on the FY2021 list, #99 in FY2022 and not on the FY2024–FY2025 lists; up 15 since FY2022.
85	L3Harris Technologies, Inc. 8 awardees, including Acron Aviation, Inc. and Fisica Applied Technologies, Inc. Top agencies DHS (Department of Homeland Security) Commerce (Department of Commerce) DLA (Defense Logistics Agency)	$6,728,596	0.1%	Rank history: #36 in FY2021, #48 in FY2022, #52 in FY2024 and #32 in FY2025; down 37 since FY2022.
86	Talton Marine Terminal, LLC Top agencies DOT (Department of Transportation) Navy (Department of the Navy)	$6,685,026	0.1%	Rank history: not on the FY2021–FY2022 lists, #99 in FY2024 and #60 in FY2025; up 26 since FY2022.
87	Radial Solutions Inc. Through Rsi-Quantitech JV LLC Top agencies Army (Department of the Army)	$6,609,042	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
88	Daekee Global Co.,Ltd Top agencies Navy (Department of the Navy)	$6,272,313	0.1%	Rank history: not on the FY2021 list, #75 in FY2022 and not on the FY2024–FY2025 lists; down 13 since FY2022.
89	System Dynamics International Incorporated Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$6,226,852	0.1%	Rank history: not on the FY2021 list, #91 in FY2022 and not on the FY2024–FY2025 lists; up 2 since FY2022.
90	P & R Water Taxi LLC Top agencies Navy (Department of the Navy)	$6,115,217	0.1%	Rank history: not on the FY2021 list, #94 in FY2022, not on the FY2024 list and #98 in FY2025; up 4 since FY2022.
91	Smit Holding Singapore PTE. Ltd. Through Smit Singapore PTE Ltd Top agencies Navy (Department of the Navy)	$6,008,026	0.1%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #61 in FY2025; new.
92	Tlingit Haida Tribal Business Corporation Through Kira Construction Management LLC Top agencies Navy (Department of the Navy) Army (Department of the Army)	$5,885,101	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 79 since FY2022.
93	Lakota Solutions LLC Top agencies USAF (Department of the Air Force)	$5,828,660	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 24 since FY2022.
94	Huckstep Holdings Corp. Through Techwise LLC Top agencies Army (Department of the Army)	$5,645,990	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 153 since FY2022.
95	Advance Development & Manufacturing Corporation Top agencies DLA (Defense Logistics Agency)	$5,610,135	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 6 since FY2022.
96	Logmet LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$5,580,351	0.1%	Rank history: not on the FY2021 list, #92 in FY2022 and not on the FY2024–FY2025 lists; down 4 since FY2022.
97	Cargo Transport Systems Company Top agencies Army (Department of the Army)	$5,568,695	0.1%	Rank history: #82 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 24 since FY2022.
98	Exodyne, Inc. Through Dynamic Science, Inc. Top agencies USAF (Department of the Air Force)	$5,365,668	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 5 since FY2022.
99	9Line LLC Top agencies USDA (Department of Agriculture)	$5,205,190	0.1%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #76 in FY2025; up 41 since FY2022.
100	Alltrack, Inc. Top agencies Army (Department of the Army)	$5,008,496	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.

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100 of 1,525 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	$7,349,863,596	Amentum Services, Inc.
4883 Support Activities for Water Transportation	$706,578,002	S.C.A. - Shipping Consultants Associated Ltd.
4885 Freight Transportation Arrangement	$462,037,073	Crowley Government Services Inc.
4889 Other Support Activities for Transportation	$429,023,199	Mantech International Corporation
4884 Support Activities for Road Transportation	$21,452,196	Professional Contract Services, Inc.
4882 Support Activities for Rail Transportation	$15,757,387	Alltrack, 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 $9.66 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 2023 ran Oct 1, 2022 – Sep 30, 2023. 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 FY2022. "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 FY2022 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 FY2023?

1. Amentum Services, Inc. ($1.45B), 2. Vertex Aerospace LLC ($944M), 3. M1 Support Services, L.P. ($847M), 4. Northrop Grumman Corporation ($467M), 5. RTX Corporation ($435M), 6. Crowley Government Services Inc. ($396M), 7. The Boeing Company ($332M), 8. Airbus Americas Inc. ($256M), 9. Aarcorp ($244M), 10. IAP Global Services LLC ($232M).

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