Top 100 Contractors in NAICS 81111: Automotive Mechanical and Electrical Repair and Maintenance, FY2023

Name: Top 100 Contractors in NAICS 81111: Automotive Mechanical and Electrical Repair and Maintenance, FY2023
Creator: GovTribe

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

The top 10 won 78% of FY2023 NAICS 81111 contract dollars

Contract obligations: $454,053,997 Net of deobligations, by contracts coded NAICS 81111 or a code under it
Contractors: 612 Parent companies with an obligation
Largest contractor: Amentum Services, Inc. $232 million, 42.6% 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. 2 awardees, including Dyncorp International LLC Top agencies Army (Department of the Army)	$231,906,169	42.6%	Rank history: #1 in FY2021, #2 in FY2022, #1 in FY2024 and not on the FY2025 list; up 1 since FY2022.
2	General Dynamics Corporation Through General Dynamics Land Systems Inc. Top agencies Army (Department of the Army)	$160,933,658	29.6%	Rank history: #2 in FY2021, #1 in FY2022, #2 in FY2024 and #2 in FY2025; down 1 since FY2022.
3	Merchants Automotive Group, LLC Top agencies DOJ (Department of Justice)	$11,887,389	2.2%	Rank history: #5 in FY2021, #6 in FY2022, #4 in FY2024 and #4 in FY2025; up 3 since FY2022.
4	Skookum Educational Programs Top agencies Army (Department of the Army) GSA (General Services Administration)	$4,498,431	0.8%	Rank history: #10 in FY2021, #8 in FY2022, #6 in FY2024 and #7 in FY2025; up 4 since FY2022.
5	Ducom Incorporated Top agencies Army (Department of the Army) Navy (Department of the Navy)	$3,380,862	0.6%	Rank history: not on the FY2021–FY2022 lists, #7 in FY2024 and not on the FY2025 list; new.
6	BSI Inc. Top agencies Army (Department of the Army)	$2,673,760	0.5%	Rank history: not on the FY2021 list, #16 in FY2022, #12 in FY2024 and #12 in FY2025; up 10 since FY2022.
7	International Service Contractors LLC Top agencies DHS (Department of Homeland Security)	$2,600,909	0.5%	Rank history: #9 in FY2021, #9 in FY2022, #9 in FY2024 and #6 in FY2025; up 2 since FY2022.
8	Insurance Auto Auctions Inc. Top agencies GSA (General Services Administration)	$2,538,260	0.5%	Rank history: #21 in FY2021, #19 in FY2022, #8 in FY2024 and #13 in FY2025; up 11 since FY2022.
9	Whitney Bradley & Brown, Inc. Through Brtrc Federal Solutions, Inc. Top agencies Army (Department of the Army)	$2,477,787	0.5%	Rank history: #17 in FY2021, #4 in FY2022, #21 in FY2024 and not on the FY2025 list; down 5 since FY2022.
10	ECO Bright Solutions LLC Top agencies Army (Department of the Army)	$2,096,363	0.4%	Rank history: #14 in FY2021, #11 in FY2022, #14 in FY2024 and #8 in FY2025; up 1 since FY2022.
11	Shenandoah Fleet Maintenance and Management, LLC Top agencies USAF (Department of the Air Force)	$2,088,062	0.4%	Rank history: #25 in FY2021, #12 in FY2022, #13 in FY2024 and #11 in FY2025; up 1 since FY2022.
12	Lakota Solutions LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$1,341,683	0.2%	Rank history: #6 in FY2021, #5 in FY2022, #27 in FY2024 and #25 in FY2025; down 7 since FY2022.
13	VSE Corporation Top agencies Navy (Department of the Navy)	$1,090,482	0.2%	Rank history: not on the FY2021–FY2022 lists, #11 in FY2024 and not on the FY2025 list; new.
14	Ranger Land Systems, Inc. Top agencies Navy (Department of the Navy)	$1,013,000	0.2%	Rank history: #11 in FY2021, #17 in FY2022 and not on the FY2024–FY2025 lists; up 3 since FY2022.
15	Alliance Worldwide Distributing LLC Top agencies DHS (Department of Homeland Security) USAF (Department of the Air Force)	$943,455	0.2%	Rank history: not on the FY2021 list, #22 in FY2022, #17 in FY2024 and #10 in FY2025; up 7 since FY2022.
16	Areli Inc. Top agencies Army (Department of the Army)	$928,514	0.2%	Rank history: #26 in FY2021, #18 in FY2022, #29 in FY2024 and not on the FY2025 list; up 2 since FY2022.
17	LEO Tech LLC Top agencies USAF (Department of the Air Force)	$840,553	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
18	JP Logistics & Consulting, LLC Top agencies Navy (Department of the Navy)	$800,328	0.1%	Rank history: #24 in FY2021, #20 in FY2022, #20 in FY2024 and #17 in FY2025; up 2 since FY2022.
19	Clemetric LLC Top agencies USAF (Department of the Air Force)	$607,741	0.1%	Rank history: not on the FY2021 list, #24 in FY2022 and not on the FY2024–FY2025 lists; up 5 since FY2022.
20	One Community Auto LLC Top agencies USAF (Department of the Air Force)	$593,800	0.1%	Rank history: #33 in FY2021, #25 in FY2022 and not on the FY2024–FY2025 lists; up 5 since FY2022.
21	Bosung Industry Co., Ltd. Top agencies USAF (Department of the Air Force)	$582,077	0.1%	Rank history: #13 in FY2021, #23 in FY2022 and not on the FY2024–FY2025 lists; up 2 since FY2022.
22	Priority Install, LLC Top agencies HHS (Department of Health and Human Services)	$553,941	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
23	Hwaseong Sangyong Service Corp. Top agencies Army (Department of the Army)	$496,910	0.1%	Rank history: not on the FY2021 list, #27 in FY2022, #26 in FY2024 and #23 in FY2025; up 4 since FY2022.
24	Farber Specialty Vehicles, Inc. Top agencies DOJ (Department of Justice)	$495,996	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
25	Bering Straits Native Corporation Through Bering Straits Global Innovations, LLC Top agencies USAF (Department of the Air Force)	$453,684	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
26	Rockville Auto & Truck Service Inc. Top agencies HHS (Department of Health and Human Services)	$426,338	0.1%	Rank history: #40 in FY2021, #31 in FY2022, #24 in FY2024 and #26 in FY2025; up 5 since FY2022.
27	Atlantic Emergency Solutions Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy) DOJ (Department of Justice)	$363,757	0.1%	Rank history: #35 in FY2021, #30 in FY2022, #38 in FY2024 and #31 in FY2025; up 3 since FY2022.
28	Brandon Phillips Top agencies USDA (Department of Agriculture)	$337,819	0.1%	Rank history: #58 in FY2021, #46 in FY2022, #85 in FY2024 and #21 in FY2025; up 18 since FY2022.
29	Ukpeagvik Inupiat Corporation Through Bowhead Base Operations LLC Top agencies Army (Department of the Army)	$318,572	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
30	Caterpillar Inc. Through Nippon Caterpillar Limited Liability Company Top agencies Navy (Department of the Navy)	$314,144	0.1%	Rank history: not on the FY2021 list, #32 in FY2022 and not on the FY2024–FY2025 lists; up 2 since FY2022.
31	D2 Government Solutions, Inc. Top agencies Navy (Department of the Navy)	$266,211	<0.1%	Rank history: not on the FY2021 list, #37 in FY2022, #39 in FY2024 and not on the FY2025 list; up 6 since FY2022.
32	Innerspace Storage Corp Top agencies GSA (General Services Administration)	$261,467	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
33	Metro Auto Auction Dallas, LLC Top agencies GSA (General Services Administration)	$256,430	<0.1%	Rank history: #56 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
34	Swanda Aerospace, LLC Top agencies Navy (Department of the Navy)	$248,742	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
35	Dahmer Powertrain, Inc. Top agencies GSA (General Services Administration)	$244,650	<0.1%	Rank history: #38 in FY2021, #91 in FY2022, #90 in FY2024 and not on the FY2025 list; up 56 since FY2022.
36	Brindlee Mountain Fire Apparatus, LLC Top agencies Navy (Department of the Navy) Army (Department of the Army)	$243,356	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
37	Bigelow Family Holdings LLC Top agencies Army (Department of the Army)	$232,592	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
38	Roberts Samuel Top agencies USDA (Department of Agriculture)	$230,950	<0.1%	Rank history: not on the FY2021 list, #67 in FY2022, #22 in FY2024 and #27 in FY2025; up 29 since FY2022.
39	Desantis Garage, Inc. Top agencies GSA (General Services Administration)	$212,484	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
40	Timothy Parks Top agencies USDA (Department of Agriculture)	$202,500	<0.1%	Rank history: not on the FY2021–FY2022 lists, #54 in FY2024 and not on the FY2025 list; up 69 since FY2022.
41	Juan O.'s Mobile Repair & Trucking, Inc. Top agencies USDA (Department of Agriculture)	$194,000	<0.1%	Rank history: #64 in FY2021, #88 in FY2022, #96 in FY2024 and #53 in FY2025; up 47 since FY2022.
42	Lindsay Motor Car Co. 2 awardees, including Lindsay Ford, LLC Top agencies DOJ (Department of Justice)	$192,774	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
43	Tires First, Inc. Top agencies GSA (General Services Administration)	$189,875	<0.1%	Rank history: not on the FY2021–FY2022 lists, #57 in FY2024 and not on the FY2025 list; new.
44	RWC International Ltd. 2 awardees Top agencies GSA (General Services Administration) USDA (Department of Agriculture) DOI (Department of the Interior)	$189,531	<0.1%	Rank history: #39 in FY2021, #33 in FY2022, #25 in FY2024 and #32 in FY2025; down 11 since FY2022.
45	Spence Industrial/ Wildfire LLC Top agencies USDA (Department of Agriculture)	$185,414	<0.1%	Rank history: not on the FY2021–FY2022 lists, #63 in FY2024 and #52 in FY2025; up 63 since FY2022.
46	MTP Drivetrain Services L.L.C. Top agencies Navy (Department of the Navy)	$184,831	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
47	Andan Trade Investment Corporation Top agencies WHS (DOD Washington Headquarters Service)	$184,344	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
48	A.B. Wilson Equipment Top agencies USDA (Department of Agriculture)	$176,700	<0.1%	Rank history: not on the FY2021 list, #51 in FY2022, #62 in FY2024 and #65 in FY2025; up 3 since FY2022.
49	Dimitria Theodoropoulos Top agencies GSA (General Services Administration)	$175,400	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
50	Yreka Outlands, Inc. Top agencies USDA (Department of Agriculture)	$169,175	<0.1%	Rank history: #93 in FY2021, #68 in FY2022, not on the FY2024 list and #43 in FY2025; up 18 since FY2022.
51	Rush Enterprises, Inc. 5 awardees, including Rush Truck Centers of Idaho, Inc., Rush Truck Centers of Tennessee, Inc. and Rush Truck Centers of Georgia, Inc. Top agencies DOI (Department of the Interior) Army (Department of the Army) GSA (General Services Administration)	$157,424	<0.1%	Rank history: #48 in FY2021, #43 in FY2022, #48 in FY2024 and #37 in FY2025; down 8 since FY2022.
52	Lu.mar. Impianti S.R.L. Top agencies Army (Department of the Army)	$156,348	<0.1%	Rank history: #65 in FY2021, #57 in FY2022 and not on the FY2024–FY2025 lists; up 5 since FY2022.
53	Spencer Motorworks, LLC Top agencies DOI (Department of the Interior) USDA (Department of Agriculture)	$148,521	<0.1%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #77 in FY2025; up 292 since FY2022.
54	Premier Vehicle Installation, Inc. Top agencies USDA (Department of Agriculture)	$146,820	<0.1%	Rank history: #82 in FY2021, #49 in FY2022, #74 in FY2024 and not on the FY2025 list; down 5 since FY2022.
55	Glick Fire Equipment Company Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$145,087	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 110 since FY2022.
56	Semi Service Inc. Through Reading Truck Equipment, LLC Top agencies GSA (General Services Administration)	$144,760	<0.1%	Rank history: not on the FY2021 list, #77 in FY2022 and not on the FY2024–FY2025 lists; up 21 since FY2022.
57	KMR Truck & Equipment Repair LLC Top agencies USDA (Department of Agriculture)	$132,049	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
58	Blaze Emergency Equipment Company, LLC Top agencies Navy (Department of the Navy)	$131,475	<0.1%	Rank history: not on the FY2021 list, #54 in FY2022, #37 in FY2024 and #39 in FY2025; down 4 since FY2022.
59	Justin Lawson Top agencies USDA (Department of Agriculture)	$129,250	<0.1%	Rank history: not on the FY2021–FY2022 lists, #79 in FY2024 and #30 in FY2025; new.
60	KG Truck & Auto, Inc. Top agencies GSA (General Services Administration)	$126,964	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 206 since FY2022.
61	Roger Michel's Equipment Repair, Inc. Top agencies USDA (Department of Agriculture)	$124,800	<0.1%	Rank history: #71 in FY2021, #60 in FY2022, #61 in FY2024 and #66 in FY2025; down 1 since FY2022.
62	Murphy-Hoffman Company Through Arkansas Kenworth Inc. Top agencies USAF (Department of the Air Force)	$122,973	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 394 since FY2022.
63	CSI Emergency Apparatus LLC Top agencies Army (Department of the Army)	$120,570	<0.1%	Rank history: not on the FY2021 list, #58 in FY2022 and not on the FY2024–FY2025 lists; down 5 since FY2022.
64	Sourceamerica Top agencies GSA (General Services Administration)	$117,837	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
65	Jared Mccasland Top agencies USDA (Department of Agriculture)	$117,087	<0.1%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #62 in FY2025; new.
66	Fleetwest Transferable Truck Bodies, LLC Top agencies GSA (General Services Administration)	$111,682	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
67	Ouimette, Charles A and Jacqueline M Top agencies USDA (Department of Agriculture)	$111,611	<0.1%	Rank history: #72 in FY2021, #93 in FY2022, #56 in FY2024 and #100 in FY2025; up 26 since FY2022.
68	Superior Automotive Service LLC Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$110,604	<0.1%	Rank history: not on the FY2021 list, #97 in FY2022 and not on the FY2024–FY2025 lists; up 29 since FY2022.
69	Frontier Equipment, Inc. Top agencies USDA (Department of Agriculture)	$110,201	<0.1%	Rank history: not on the FY2021–FY2022 lists, #41 in FY2024 and not on the FY2025 list; up 32 since FY2022.
70	Bruckner Truck Sales Inc. 2 awardees Top agencies USDA (Department of Agriculture) DOI (Department of the Interior) GSA (General Services Administration)	$108,227	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 375 since FY2022.
71	Wolfe Truck & Equipment Service Inc. Top agencies USDA (Department of Agriculture)	$108,000	<0.1%	Rank history: not on the FY2021 list, #76 in FY2022, #94 in FY2024 and not on the FY2025 list; up 5 since FY2022.
72	Michael W Butala Top agencies USDA (Department of Agriculture)	$107,335	<0.1%	Rank history: #68 in FY2021, #74 in FY2022, #46 in FY2024 and #47 in FY2025; up 2 since FY2022.
73	Automall Automotive, LLC Top agencies GSA (General Services Administration)	$106,560	<0.1%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #57 in FY2025; new.
74	Mccarley Michael Top agencies USDA (Department of Agriculture)	$104,980	<0.1%	Rank history: not on the FY2021 list, #63 in FY2022, #73 in FY2024 and not on the FY2025 list; down 11 since FY2022.
75	Guahan Ventures Inc. Top agencies USAF (Department of the Air Force)	$103,900	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
76	GPC Consolidated Reporting Top agencies USDA (Department of Agriculture)	$103,711	<0.1%	Rank history: not on the FY2021–FY2022 lists, #78 in FY2024 and not on the FY2025 list; new.
77	Janet L Barnes Top agencies USDA (Department of Agriculture)	$103,400	<0.1%	Rank history: not on the FY2021 list, #65 in FY2022, #51 in FY2024 and not on the FY2025 list; down 12 since FY2022.
78	Naranjo, Fidel Top agencies GSA (General Services Administration)	$101,765	<0.1%	Rank history: #74 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
79	Matthews Specialty Vehicles, Inc. Top agencies Navy (Department of the Navy)	$101,087	<0.1%	Rank history: not on the FY2021 list, #96 in FY2022 and not on the FY2024–FY2025 lists; up 17 since FY2022.
80	Riverview International Trucks, LLC Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$100,200	<0.1%	Rank history: #55 in FY2021, #39 in FY2022, #75 in FY2024 and not on the FY2025 list; down 41 since FY2022.
81	Trueline LLC Top agencies USDA (Department of Agriculture)	$99,616	<0.1%	Rank history: not on the FY2021–FY2022 lists, #99 in FY2024 and #64 in FY2025; up 112 since FY2022.
82	Pathways Technical Services LLC Top agencies USAF (Department of the Air Force)	$97,507	<0.1%	Rank history: not on the FY2021 list, #86 in FY2022, #93 in FY2024 and #80 in FY2025; up 4 since FY2022.
83	Transfleet Services LLC Top agencies GSA (General Services Administration)	$97,000	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
84	M&T Enterprise LLC Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$96,999	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
85	Silverstone Systems LLC Top agencies USAF (Department of the Air Force)	$96,850	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
86	I-5 Rentals, Inc. Top agencies DOI (Department of the Interior)	$96,806	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
87	A & N Diesel LLC Top agencies USDA (Department of Agriculture)	$96,167	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 65 since FY2022.
88	Op Customs LLC Top agencies USDA (Department of Agriculture)	$94,450	<0.1%	Rank history: not on the FY2021 list, #81 in FY2022, not on the FY2024 list and #88 in FY2025; down 7 since FY2022.
89	Ed's Heavy Mobile Repair LLC Top agencies USDA (Department of Agriculture)	$93,375	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
90	Cates Dietz Top agencies USDA (Department of Agriculture)	$92,634	<0.1%	Rank history: not on the FY2021–FY2022 lists, #100 in FY2024 and #67 in FY2025; new.
91	Certified Stainless Service Inc. Top agencies Navy (Department of the Navy) USDA (Department of Agriculture)	$92,273	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
92	KJM Enterprises Inc. Top agencies GSA (General Services Administration)	$91,075	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
93	High Desert Hydraulics, Inc. Top agencies USDA (Department of Agriculture)	$89,955	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 125 since FY2022.
94	JBP LLC Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$88,322	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 20 since FY2022.
95	BDR Preferred Holdings LLC Top agencies GSA (General Services Administration) USDA (Department of Agriculture)	$86,424	<0.1%	Rank history: not on the FY2021–FY2022 lists, #67 in FY2024 and not on the FY2025 list; up 184 since FY2022.
96	Emergency Vehicle Specialist, Inc. Top agencies WHS (DOD Washington Headquarters Service)	$84,031	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 9 since FY2022.
97	10-8 Tactical Inc. Top agencies Army (Department of the Army) GSA (General Services Administration)	$82,798	<0.1%	Rank history: not on the FY2021 list, #79 in FY2022, #82 in FY2024 and #36 in FY2025; down 18 since FY2022.
98	Dorwarts Garage Top agencies GSA (General Services Administration)	$82,625	<0.1%	Rank history: not on the FY2021–FY2022 lists, #60 in FY2024 and #70 in FY2025; new.
99	Als Marine Service Inc. Top agencies DOI (Department of the Interior)	$82,565	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
100	Barstow Towing, Inc. Top agencies GSA (General Services Administration)	$82,220	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.

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100 of 612 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 81111

Code	Net obligations	Largest contractor
811111 General Automotive Repair	$450,522,378	Amentum Services, Inc.
811114 Specialized Automotive Repair	$2,119,206	Priority Install, LLC

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 $544 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 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 81111 contractors in FY2023?

1. Amentum Services, Inc. ($232M), 2. General Dynamics Corporation ($161M), 3. Merchants Automotive Group, LLC ($11.9M), 4. Skookum Educational Programs ($4.5M), 5. Ducom Incorporated ($3.38M), 6. BSI Inc. ($2.67M), 7. International Service Contractors LLC ($2.6M), 8. Insurance Auto Auctions Inc. ($2.54M), 9. Whitney Bradley & Brown, Inc. ($2.48M), 10. ECO Bright Solutions LLC ($2.1M).

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