Top 100 Contractors in PSC 4240: Safety and Rescue Equipment, FY2021

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Avon Rubber P.L.C. Through Avon Protection Systems Incorporated Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$34,011,761	16.6%	Rank history: #1 in FY2022, #3 in FY2023, #14 in FY2024 and not on the FY2025 list; up 1 since FY2020.
2	Theodor Wille Intertrade GMBH 2 awardees, including Atlantic Diving Supply, Inc. Top agencies DLA (Defense Logistics Agency) DOS (Department of State) DHS (Department of Homeland Security)	$24,043,539	11.8%	Rank history: #2 in FY2022, #2 in FY2023, #8 in FY2024 and not on the FY2025 list; up 1 since FY2020.
3	SAFRAN 2 awardees, including Avox Systems Inc. and Air Cruisers Company, LLC Top agencies Army (Department of the Army) DLA (Defense Logistics Agency) USAF (Department of the Air Force)	$23,219,464	11.4%	Rank history: #5 in FY2022, #5 in FY2023, #10 in FY2024 and #8 in FY2025; up 9 since FY2020.
4	3M Company 2 awardees, including Scott Technologies, Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy) NASA (National Aeronautics and Space Administration)	$22,607,186	11.1%	Rank history: #3 in FY2022, #4 in FY2023, #6 in FY2024 and #16 in FY2025; up 2 since FY2020.
5	Avon Protection Systems Incorporated Top agencies Army (Department of the Army)	$10,632,506	5.2%	Rank history: not on the FY2022–FY2025 lists; up 75 since FY2020.
6	New ILC Dover Inc. Through ILC Dover LP Top agencies DOS (Department of State) Army (Department of the Army) VA (Department of Veterans Affairs)	$4,870,083	2.4%	Rank history: #11 in FY2022, #11 in FY2023 and not on the FY2024–FY2025 lists; up 11 since FY2020.
7	Armorsource LLC Top agencies USAF (Department of the Air Force)	$4,641,780	2.3%	Rank history: not on the FY2022–FY2025 lists; down 2 since FY2020.
8	Federal Resources Supply Company 4 awardees Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security) DOI (Department of the Interior)	$4,625,238	2.3%	Rank history: #16 in FY2022, #18 in FY2023, #21 in FY2024 and #24 in FY2025; down 4 since FY2020.
9	The Churchill Companies Through TSI Incorporated Top agencies DOL (Department of Labor) Army (Department of the Army) HHS (Department of Health and Human Services)	$2,698,230	1.3%	Rank history: #23 in FY2022 and not on the FY2023–FY2025 lists; down 2 since FY2020.
10	Design West Technologies Inc. Top agencies Navy (Department of the Navy)	$2,657,742	1.3%	Rank history: #6 in FY2022, #6 in FY2023, not on the FY2024 list and #47 in FY2025; up 8 since FY2020.
11	Tribalco LLC Top agencies USAF (Department of the Air Force)	$2,515,048	1.2%	Rank history: #30 in FY2022 and not on the FY2023–FY2025 lists; down 2 since FY2020.
12	Tactical & Survival Specialties, LLC Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security) VA (Department of Veterans Affairs)	$2,387,991	1.2%	Rank history: #94 in FY2022 and not on the FY2023–FY2025 lists; down 4 since FY2020.
13	First Line Technology LLC Top agencies DOS (Department of State)	$2,328,245	1.1%	Rank history: #15 in FY2022 and not on the FY2023–FY2025 lists; up 10 since FY2020.
14	South Texas Lighthouse for the Blind Foundation Top agencies Army (Department of the Army)	$2,280,157	1.1%	Rank history: #19 in FY2022, #15 in FY2023, #16 in FY2024 and #22 in FY2025; up 7 since FY2020.
15	Noble Sales Co. Inc. 2 awardees, including Noble Supply & Logistics, LLC and Tactical & Survival Specialties, LLC Top agencies DLA (Defense Logistics Agency) Army (Department of the Army) DHS (Department of Homeland Security)	$2,271,612	1.1%	Rank history: #9 in FY2022, not on the FY2023 list, #5 in FY2024 and #9 in FY2025; up 420 since FY2020.
16	Rite-Kem, Inc. Top agencies GSA (General Services Administration)	$2,054,250	1.0%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
17	Cam Lock Limited Top agencies DLA (Defense Logistics Agency)	$1,726,935	0.8%	Rank history: #7 in FY2022, #13 in FY2023, #11 in FY2024 and #5 in FY2025; new, not ranked in FY2020.
18	Winston-Salem Industries for the Blind Inc. Top agencies USDA (Department of Agriculture) DHS (Department of Homeland Security) DLA (Defense Logistics Agency)	$1,502,285	0.7%	Rank history: #17 in FY2022, #51 in FY2023, #24 in FY2024 and #38 in FY2025; up 94 since FY2020.
19	International Television Corporation Top agencies DLA (Defense Logistics Agency) Army (Department of the Army) Navy (Department of the Navy)	$1,406,772	0.7%	Rank history: #47 in FY2022 and not on the FY2023–FY2025 lists; up 36 since FY2020.
20	W S Darley & Co Top agencies DLA (Defense Logistics Agency) USAF (Department of the Air Force) DHS (Department of Homeland Security)	$1,319,321	0.6%	Rank history: #22 in FY2022, #53 in FY2023, #45 in FY2024 and #7 in FY2025; up 11 since FY2020.
21	Fulton Supply Company Top agencies DLA (Defense Logistics Agency)	$1,118,057	0.5%	Rank history: #43 in FY2022 and not on the FY2023–FY2025 lists; up 5 since FY2020.
22	Aardvark Top agencies DLA (Defense Logistics Agency) USAF (Department of the Air Force) DHS (Department of Homeland Security)	$1,108,309	0.5%	Rank history: #40 in FY2022, #63 in FY2023 and not on the FY2024–FY2025 lists; up 32 since FY2020.
23	Nomad Global Communication Solutions, Incorporated Top agencies DOD (Department of Defense) GSA (General Services Administration)	$1,103,854	0.5%	Rank history: #26 in FY2022, not on the FY2023 list, #22 in FY2024 and not on the FY2025 list; up 39 since FY2020.
24	S & K Electronics Inc. Top agencies DLA (Defense Logistics Agency)	$1,045,772	0.5%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
25	ECI Defense Group, Inc. Top agencies DLA (Defense Logistics Agency) USAF (Department of the Air Force)	$1,044,169	0.5%	Rank history: #20 in FY2022, #37 in FY2023, #20 in FY2024 and #14 in FY2025; up 24 since FY2020.
26	SSK Military Industries Inc. Top agencies USSOCOM (United States Special Operations Command) USAF (Department of the Air Force) DOJ (Department of Justice)	$1,033,151	0.5%	Rank history: #41 in FY2022, #42 in FY2023, #35 in FY2024 and #37 in FY2025; down 1 since FY2020.
27	Capewell Aerial Systems LLC Through Aerial Machine & Tool Corporation Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$954,531	0.5%	Rank history: #14 in FY2022, #10 in FY2023, #19 in FY2024 and #23 in FY2025; up 6 since FY2020.
28	Kampi Components Co Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$951,430	0.5%	Rank history: #79 in FY2022, #57 in FY2023, #64 in FY2024 and #40 in FY2025; up 9 since FY2020.
29	Sarcos Corp. Through Sarcos Group LC Top agencies Army (Department of the Army)	$927,577	0.5%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
30	SZY Holdings, LLC Top agencies DLA (Defense Logistics Agency)	$888,434	0.4%	Rank history: #29 in FY2022, #33 in FY2023, not on the FY2024 list and #51 in FY2025; down 3 since FY2020.
31	Weckworth Manufacturing, Inc. Top agencies DLA (Defense Logistics Agency)	$833,401	0.4%	Rank history: #8 in FY2022, #26 in FY2023, not on the FY2024 list and #58 in FY2025; up 10 since FY2020.
32	MSA Safety Sales LLC Top agencies DHS (Department of Homeland Security) USAF (Department of the Air Force) Smithsonian (Smithsonian Institution)	$820,049	0.4%	Rank history: #64 in FY2022, #1 in FY2023, #1 in FY2024 and #10 in FY2025; up 2 since FY2020.
33	Seva Technical Services, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency) Army (Department of the Army)	$772,011	0.4%	Rank history: #27 in FY2022 and not on the FY2023–FY2025 lists; up 9 since FY2020.
34	Atlantic Diving Supply, Inc. Top agencies DLA (Defense Logistics Agency) USAF (Department of the Air Force) DOS (Department of State)	$750,138	0.4%	Rank history: not on the FY2022–FY2023 lists, #3 in FY2024 and #4 in FY2025; down 20 since FY2020.
35	Oceanetics Inc. Top agencies DHS (Department of Homeland Security)	$711,410	0.3%	Rank history: #37 in FY2022, #22 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
36	Anchor Industries Inc. Top agencies DLA (Defense Logistics Agency)	$706,184	0.3%	Rank history: #10 in FY2022, #9 in FY2023, #27 in FY2024 and #77 in FY2025; up 64 since FY2020.
37	LN Curtis & Sons Top agencies DOI (Department of the Interior) Navy (Department of the Navy) DLA (Defense Logistics Agency)	$689,909	0.3%	Rank history: #28 in FY2022, #25 in FY2023, #94 in FY2024 and #97 in FY2025; up 2 since FY2020.
38	Safariland LLC 2 awardees, including Med-Eng, LLC and Mustang Survival, Inc. Top agencies DOJ (Department of Justice) DHS (Department of Homeland Security)	$582,993	0.3%	Rank history: not on the FY2022–FY2025 lists; up 12 since FY2020.
39	Cynergy Professional Systems LLC Top agencies VA (Department of Veterans Affairs)	$545,864	0.3%	Rank history: #12 in FY2022 and not on the FY2023–FY2025 lists; up 48 since FY2020.
40	Lifeline Mobile Inc. Top agencies GSA (General Services Administration)	$526,214	0.3%	Rank history: not on the FY2022–FY2023 lists, #40 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
41	Security 20 / 20, Inc. Top agencies DHS (Department of Homeland Security) DOS (Department of State)	$493,459	0.2%	Rank history: not on the FY2022–FY2025 lists; up 376 since FY2020.
42	Stryker Corporation 3 awardees, including Stryker Sales, LLC and Physio-Control Inc. Top agencies VA (Department of Veterans Affairs) DOS (Department of State) DOI (Department of the Interior)	$471,304	0.2%	Rank history: not on the FY2022–FY2025 lists; up 107 since FY2020.
43	Government of the United States 6 awardees, including Federal Prison Industries, Inc., DLA Troop Support and Federal Acquisition Service Top agencies Navy (Department of the Navy) GSA (General Services Administration) DLA (Defense Logistics Agency)	$457,116	0.2%	Rank history: #48 in FY2022, #44 in FY2023, #48 in FY2024 and #42 in FY2025; up 8 since FY2020.
44	Field Aviation, Inc. Through Ases LLC Top agencies DLA (Defense Logistics Agency)	$448,951	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
45	Arbill Industries Inc. Top agencies DLA (Defense Logistics Agency)	$442,960	0.2%	Rank history: #76 in FY2022, #19 in FY2023, #25 in FY2024 and #20 in FY2025; up 15 since FY2020.
46	Western Safety Products, Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$411,868	0.2%	Rank history: #39 in FY2022, #46 in FY2023 and not on the FY2024–FY2025 lists; down 1 since FY2020.
47	Municipal Emergency Services, Inc. Top agencies Army (Department of the Army) DOJ (Department of Justice) USAF (Department of the Air Force)	$407,346	0.2%	Rank history: not on the FY2022 list, #38 in FY2023, #44 in FY2024 and not on the FY2025 list; up 196 since FY2020.
48	CSE Corporation Top agencies DOL (Department of Labor)	$395,277	0.2%	Rank history: not on the FY2022 list, #93 in FY2023, #68 in FY2024 and #79 in FY2025; up 75 since FY2020.
49	Dupont De Nemours, Inc. Through Mecs, Inc. Top agencies Navy (Department of the Navy)	$373,000	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
50	Arotech Corporation Through Faac Incorporated Top agencies USAF (Department of the Air Force)	$367,580	0.2%	Rank history: not on the FY2022–FY2025 lists; up 258 since FY2020.
51	Allied Tools, Inc. Top agencies DLA (Defense Logistics Agency)	$332,785	0.2%	Rank history: #88 in FY2022 and not on the FY2023–FY2025 lists; up 178 since FY2020.
52	Caprice Electronics, Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy) DOS (Department of State)	$328,951	0.2%	Rank history: not on the FY2022 list, #41 in FY2023, #89 in FY2024 and #87 in FY2025; up 37 since FY2020.
53	Evident, Inc. Top agencies DHS (Department of Homeland Security)	$318,600	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
54	Avmedical LLC Top agencies DHS (Department of Homeland Security)	$309,000	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
55	Nasatka Barrier, Incorporated Top agencies Army (Department of the Army)	$309,000	0.2%	Rank history: #42 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
56	J & N Marketing, Inc. Top agencies DOI (Department of the Interior)	$301,160	0.1%	Rank history: not on the FY2022 list, #86 in FY2023 and not on the FY2024–FY2025 lists; up 65 since FY2020.
57	Automated Building Solutions, Inc. Top agencies DMEA (Defense Microelectronics Activity)	$297,310	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
58	Quantico Tactical Incorporated Top agencies DLA (Defense Logistics Agency) USAF (Department of the Air Force)	$296,044	0.1%	Rank history: not on the FY2022–FY2023 lists, #61 in FY2024 and #92 in FY2025; down 23 since FY2020.
59	Ross Development Inc. Top agencies DLA (Defense Logistics Agency)	$289,742	0.1%	Rank history: not on the FY2022–FY2025 lists; up 42 since FY2020.
60	Patriot Industries, Inc. Top agencies DHS (Department of Homeland Security)	$284,151	0.1%	Rank history: not on the FY2022–FY2025 lists; up 60 since FY2020.
61	Stereo Optical Company Inc. 2 awardees, including Eye Safety Systems Inc. and Oakley Inc. Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$279,898	0.1%	Rank history: not on the FY2022 list, #36 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
62	Skips Defense Solutions LLC Top agencies Army (Department of the Army) DHS (Department of Homeland Security)	$269,938	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
63	Astrocom Electronics Inc. Top agencies DLA (Defense Logistics Agency)	$267,217	0.1%	Rank history: #35 in FY2022, #39 in FY2023 and not on the FY2024–FY2025 lists; up 46 since FY2020.
64	Vigil America Inc. Top agencies USDA (Department of Agriculture)	$265,370	0.1%	Rank history: not on the FY2022–FY2023 lists, #75 in FY2024 and #90 in FY2025; up 253 since FY2020.
65	Raeco-Lic, L.L.C. Top agencies EPA (Environmental Protection Agency)	$254,555	0.1%	Rank history: not on the FY2022–FY2025 lists; down 7 since FY2020.
66	Revision Militaire Inc Through Revision Military Limited Top agencies Army (Department of the Army) DHS (Department of Homeland Security)	$253,034	0.1%	Rank history: not on the FY2022 list, #35 in FY2023 and not on the FY2024–FY2025 lists; up 155 since FY2020.
67	Gravitec Systems Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$252,980	0.1%	Rank history: not on the FY2022–FY2024 lists and #39 in FY2025; new, not ranked in FY2020.
68	Shore Solutions, Inc. Top agencies DOS (Department of State)	$248,929	0.1%	Rank history: not on the FY2022–FY2025 lists; up 122 since FY2020.
69	Williams Aerospace & Manufacturing Inc. Through Tavco, Inc. Top agencies DLA (Defense Logistics Agency)	$246,809	0.1%	Rank history: not on the FY2022–FY2023 lists, #37 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
70	Aircraft & Commercial Enterprises, Inc. Top agencies DLA (Defense Logistics Agency)	$234,669	0.1%	Rank history: not on the FY2022–FY2024 lists and #86 in FY2025; up 28 since FY2020.
71	Rescue One Training for Life Inc. Top agencies HHS (Department of Health and Human Services) SEC (Securities and Exchange Commission)	$233,121	0.1%	Rank history: #38 in FY2022, #48 in FY2023, #43 in FY2024 and not on the FY2025 list; down 23 since FY2020.
72	Stellar Industrial Supply, Inc. Top agencies DLA (Defense Logistics Agency)	$229,473	0.1%	Rank history: not on the FY2022–FY2025 lists; up 63 since FY2020.
73	Longhorn Regional Service Center, LLC Top agencies Army (Department of the Army)	$226,600	0.1%	Rank history: #33 in FY2022 and not on the FY2023–FY2025 lists; up 32 since FY2020.
74	Ana Sourcing LLC Top agencies DLA (Defense Logistics Agency)	$217,232	0.1%	Rank history: #50 in FY2022, #21 in FY2023, #32 in FY2024 and #67 in FY2025; new, not ranked in FY2020.
75	Med-Eng, LLC Top agencies DOJ (Department of Justice)	$216,354	0.1%	Rank history: not on the FY2022–FY2025 lists; up 35 since FY2020.
76	Lifesaving Systems LLC Top agencies DLA (Defense Logistics Agency)	$201,206	0.1%	Rank history: #59 in FY2022, #59 in FY2023, #50 in FY2024 and #43 in FY2025; down 3 since FY2020.
77	B & H International LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$201,178	0.1%	Rank history: not on the FY2022–FY2025 lists; up 17 since FY2020.
78	Rich Industries Inc. Top agencies Navy (Department of the Navy)	$200,925	0.1%	Rank history: #65 in FY2022 and not on the FY2023–FY2025 lists; up 3 since FY2020.
79	Marathonnorco Aerospace, Inc. Top agencies DLA (Defense Logistics Agency)	$199,278	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
80	Avox Systems Inc. Top agencies DLA (Defense Logistics Agency)	$196,563	0.1%	Rank history: not on the FY2022–FY2025 lists; up 86 since FY2020.
81	R.s. Hughes Company, Inc. Top agencies EPA (Environmental Protection Agency) Army (Department of the Army)	$195,245	0.1%	Rank history: not on the FY2022–FY2025 lists; up 59 since FY2020.
82	The Aleut Corporation Through Strata-G Solutions LLC Top agencies DLA (Defense Logistics Agency)	$193,681	0.1%	Rank history: #75 in FY2022 and not on the FY2023–FY2025 lists; up 63 since FY2020.
83	The Airport Shoppe Top agencies USAF (Department of the Air Force)	$185,170	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
84	Googoz.com, Inc. Top agencies USAF (Department of the Air Force)	$183,647	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
85	Supplycore LLC Top agencies DLA (Defense Logistics Agency)	$180,970	0.1%	Rank history: not on the FY2022–FY2025 lists; up 68 since FY2020.
86	Stealth Supply, Inc. Top agencies DLA (Defense Logistics Agency)	$180,811	0.1%	Rank history: not on the FY2022–FY2025 lists; up 43 since FY2020.
87	ILC Dover LP Top agencies DOS (Department of State)	$179,608	0.1%	Rank history: not on the FY2022–FY2025 lists; up 87 since FY2020.
88	Survival Innovations, LLC Top agencies DLA (Defense Logistics Agency)	$175,175	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
89	Windward Enterprises, LLC Top agencies DLA (Defense Logistics Agency)	$166,070	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
90	Hodges Transportation, Inc. Top agencies DOS (Department of State)	$157,677	0.1%	Rank history: not on the FY2022–FY2023 lists, #42 in FY2024 and #60 in FY2025; new, not ranked in FY2020.
91	EHB Supply Top agencies Navy (Department of the Navy)	$150,454	0.1%	Rank history: not on the FY2022–FY2023 lists, #71 in FY2024 and not on the FY2025 list; down 34 since FY2020.
92	Kipper Tool Company Top agencies DLA (Defense Logistics Agency) DOL (Department of Labor) Navy (Department of the Navy)	$147,618	0.1%	Rank history: #44 in FY2022 and not on the FY2023–FY2025 lists; down 54 since FY2020.
93	Gmes LLC Top agencies DHS (Department of Homeland Security)	$145,322	0.1%	Rank history: not on the FY2022 list, #84 in FY2023, #84 in FY2024 and not on the FY2025 list; up 61 since FY2020.
94	Rrds Inc. Top agencies DOS (Department of State) Army (Department of the Army)	$142,657	0.1%	Rank history: #45 in FY2022, not on the FY2023 list, #17 in FY2024 and not on the FY2025 list; down 42 since FY2020.
95	Janels Industries Inc. Top agencies DLA (Defense Logistics Agency)	$141,544	0.1%	Rank history: not on the FY2022–FY2023 lists, #92 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
96	Koninklijke Philips N.V. Through Philips North America LLC Top agencies DOI (Department of the Interior)	$138,842	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
97	Colonial Supplies LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$135,948	0.1%	Rank history: not on the FY2022–FY2025 lists; up 62 since FY2020.
98	David Perkins Enterprises, Inc. Top agencies DLA (Defense Logistics Agency)	$135,500	0.1%	Rank history: #77 in FY2022, #31 in FY2023, #30 in FY2024 and #56 in FY2025; up 171 since FY2020.
99	CPR Savers & First Aid Supply, LLC Top agencies DLA (Defense Logistics Agency) Commerce (Department of Commerce) DOE (Department of Energy)	$135,385	0.1%	Rank history: not on the FY2022 list, #24 in FY2023 and not on the FY2024–FY2025 lists; up 96 since FY2020.
100	Botach Inc. Top agencies Army (Department of the Army) DLA (Defense Logistics Agency) DOS (Department of State)	$134,476	0.1%	Rank history: not on the FY2022 list, #70 in FY2023, #53 in FY2024 and not on the FY2025 list; up 24 since FY2020.

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 $204 million obligated before deobligations, so they never pass 100%.
• Parent companies: each action counts under the ultimate parent its award record names, or under the awardee when it names none, so no dollar counts twice. Parents of the same name (Inc., LLC and the like aside) count as one company, since FPDS records a company's parent under more than one UEI over time. GovTribe corrects a few parents and names by hand; see the corrections.
• Fiscal year 2021 ran Oct 1, 2020 – Sep 30, 2021. The Department of Defense reports its contract actions to FPDS about 90 days late, so a fiscal year is ranked once they're in, in February, and the list doesn't change after.
• Rank changes compare with FY2020. "New" marks a company outside that period's top 500, and "Returned" one of those that was on an earlier fiscal year's list.
• Rank lines show each company's rank on every fiscal year's list since FY2021, #1 at the top, on a scale that gives the top of the list more room. A dashed stretch spans years it wasn't on the list. The step from FY2020 takes the color of the rank change beside it.
• Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

Quick answers