Top 100 Contractors in PSC N: Installation of Equipment, FY2022

Name: Top 100 Contractors in PSC N: Installation of Equipment, FY2022
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2021 – Sep 30, 2022 Code page on GovTribe

The top 10 won 52% of FY2022 PSC N contract dollars

Contract obligations: $2,614,218,880 Net of deobligations, by contracts coded PSC N or a code under it
Contractors: 1,713 Parent companies with an obligation
Largest contractor: The Boeing Company $398 million, 14.5% 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	The Boeing Company 3 awardees Top agencies USAF (Department of the Air Force)	$398,255,982	14.5%	Rank history: not on the FY2021 list, #4 in FY2023, #16 in FY2024 and #18 in FY2025; up 107 since FY2021.
2	Northrop Grumman Corporation 5 awardees, including Northrop Grumman Systems Corporation Top agencies MDA (DOD Missile Defense Agency) Navy (Department of the Navy) USAF (Department of the Air Force)	$283,793,101	10.4%	Rank history: #4 in FY2021, #1 in FY2023, #1 in FY2024 and #1 in FY2025; up 2 since FY2021.
3	Johnson Controls Security Solutions LLC 14 awardees, including Johnson Controls Building Automation Systems, LLC, Johnson Controls, Inc. and Johnson Controls Fire Protection LP Top agencies Army (Department of the Army) WHS (DOD Washington Headquarters Service) USAF (Department of the Air Force)	$182,218,369	6.7%	Rank history: #2 in FY2021, #37 in FY2023 and not on the FY2024–FY2025 lists; down 1 since FY2021.
4	M.c. Dean, Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army) DOD (Department of Defense)	$145,401,954	5.3%	Rank history: #7 in FY2021, #3 in FY2023, #3 in FY2024 and #3 in FY2025; up 3 since FY2021.
5	MLU Services, LLC Top agencies DHS (Department of Homeland Security)	$120,133,318	4.4%	Rank history: #51 in FY2021, #7 in FY2023, #29 in FY2024 and #7 in FY2025; up 46 since FY2021.
6	BAE Systems PLC 2 awardees, including BAE Systems Technology Solutions & Services Inc. and BAE Systems Information and Electronic Systems Integration Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$90,584,206	3.3%	Rank history: #8 in FY2021, #5 in FY2023, #4 in FY2024 and #2 in FY2025; up 2 since FY2021.
7	Disaster Solutions Alliance, LLC Top agencies DHS (Department of Homeland Security)	$59,563,064	2.2%	Rank history: #48 in FY2021, #33 in FY2023, not on the FY2024 list and #68 in FY2025; up 41 since FY2021.
8	Siemens Aktiengesellschaft 6 awardees, including Siemens Government Technologies Inc., Siemens Medical Solutions Usa, Inc. and Siemens Industry Inc. Top agencies Army (Department of the Army) VA (Department of Veterans Affairs) DECA (Defense Commissary Agency)	$49,106,483	1.8%	Rank history: #11 in FY2021, #6 in FY2023, #24 in FY2024 and #30 in FY2025; up 3 since FY2021.
9	Serco North America (Holdings) Inc 2 awardees, including Serco Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$48,519,499	1.8%	Rank history: #3 in FY2021, #20 in FY2023 and not on the FY2024–FY2025 lists; down 6 since FY2021.
10	Leidos Holdings, Inc. 2 awardees, including Leidos, Inc. Top agencies Navy (Department of the Navy)	$47,973,567	1.8%	Rank history: #30 in FY2021, #11 in FY2023, #11 in FY2024 and #9 in FY2025; up 20 since FY2021.
11	WSP USA Solutions Inc. Top agencies Army (Department of the Army)	$41,395,956	1.5%	Rank history: #10 in FY2021, #13 in FY2023 and not on the FY2024–FY2025 lists; down 1 since FY2021.
12	VT Milcom Inc. 2 awardees Top agencies Navy (Department of the Navy)	$40,755,611	1.5%	Rank history: #12 in FY2021, #10 in FY2023, #13 in FY2024 and #14 in FY2025; unchanged since FY2021.
13	Huntington Ingalls Industries, Inc. Through HII Fleet Support Group LLC Top agencies Navy (Department of the Navy)	$29,345,077	1.1%	Rank history: #16 in FY2021, #15 in FY2023, #23 in FY2024 and #31 in FY2025; up 3 since FY2021.
14	Defense Systems and Solutions Top agencies Army (Department of the Army)	$28,297,680	1.0%	Rank history: not on the FY2021 list, #49 in FY2023, not on the FY2024 list and #35 in FY2025; new.
15	Parsons Corporation 4 awardees, including Ptsi Managed Services Inc., Parsons Government Services Inc. and Williams Electric Co Inc. Top agencies Army (Department of the Army) DHA (Defense Health Agency)	$27,401,076	1.0%	Rank history: #18 in FY2021, #21 in FY2023, #34 in FY2024 and #21 in FY2025; up 3 since FY2021.
16	Krueger International, Inc. 2 awardees, including Spacesaver Storage Systems Inc. Top agencies DOJ (Department of Justice) Army (Department of the Army) DFAS (Defense Finance and Accounting Service)	$27,362,668	1.0%	Rank history: #23 in FY2021, #26 in FY2023, #25 in FY2024 and #27 in FY2025; up 7 since FY2021.
17	Spectrum Solutions Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy) DCSA (Defense Counterintelligence and Security Agency)	$26,984,382	1.0%	Rank history: #28 in FY2021, #14 in FY2023, #8 in FY2024 and #13 in FY2025; up 11 since FY2021.
18	Wells Global, LLC Top agencies DOT (Department of Transportation)	$26,314,305	1.0%	Rank history: #24 in FY2021, #9 in FY2023, #20 in FY2024 and #12 in FY2025; up 6 since FY2021.
19	Securityhunter, Inc. Top agencies SSA (Social Security Administration)	$24,056,862	0.9%	Rank history: #27 in FY2021, #19 in FY2023, #22 in FY2024 and #10 in FY2025; up 8 since FY2021.
20	Signet Technologies Inc. 4 awardees, including Convergint Technologies LLC Top agencies Army (Department of the Army) VA (Department of Veterans Affairs) Navy (Department of the Navy)	$21,512,583	0.8%	Rank history: #42 in FY2021, #23 in FY2023, #47 in FY2024 and #39 in FY2025; up 22 since FY2021.
21	PAE Government Services Inc. Top agencies USAID (US Agency for International Development)	$21,337,436	0.8%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
22	Kbr, Inc. 3 awardees, including KBR Wyle Services, LLC and KBR Services, LLC Top agencies Army (Department of the Army) Navy (Department of the Navy)	$20,661,546	0.8%	Rank history: #25 in FY2021, #35 in FY2023 and not on the FY2024–FY2025 lists; up 3 since FY2021.
23	Corbett Technology Solutions Inc. 3 awardees, including Integrated Security Solutions Inc., Pavion Corp. and Star Asset Security LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) Treasury (Department of the Treasury)	$19,399,622	0.7%	Rank history: #29 in FY2021, #17 in FY2023, #43 in FY2024 and not on the FY2025 list; up 6 since FY2021.
24	Chinook Systems Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy)	$19,328,767	0.7%	Rank history: not on the FY2021 list, #29 in FY2023 and not on the FY2024–FY2025 lists; up 81 since FY2021.
25	Sentinel Power Services, LLC Top agencies DOT (Department of Transportation)	$18,457,456	0.7%	Rank history: #60 in FY2021, #40 in FY2023, #31 in FY2024 and #32 in FY2025; up 35 since FY2021.
26	Miquin, L.L.C. Top agencies Navy (Department of the Navy)	$17,662,010	0.6%	Rank history: not on the FY2021 list, #24 in FY2023 and not on the FY2024–FY2025 lists; up 194 since FY2021.
27	Dewberry Design-Builders Inc. Top agencies DIA (Defense Intelligence Agency) Army (Department of the Army)	$16,627,059	0.6%	Rank history: #80 in FY2021, #22 in FY2023 and not on the FY2024–FY2025 lists; up 53 since FY2021.
28	Prism Maritime, Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DHS (Department of Homeland Security)	$15,245,497	0.6%	Rank history: #21 in FY2021, #8 in FY2023, #5 in FY2024 and #6 in FY2025; down 7 since FY2021.
29	Aptim Federal Services LLC Top agencies DHS (Department of Homeland Security)	$14,495,482	0.5%	Rank history: #14 in FY2021 and not on the FY2023–FY2025 lists; down 15 since FY2021.
30	Cusa Consulting LLC Top agencies DOT (Department of Transportation)	$14,031,748	0.5%	Rank history: #43 in FY2021, #18 in FY2023, #17 in FY2024 and #41 in FY2025; up 13 since FY2021.
31	Jacobs Engineering Group Inc. Through Ch2M Facility Support Services, LLC Top agencies DHS (Department of Homeland Security)	$13,747,729	0.5%	Rank history: #9 in FY2021, #45 in FY2023 and not on the FY2024–FY2025 lists; down 22 since FY2021.
32	BPD Engineering, LLC Top agencies DOJ (Department of Justice)	$13,461,810	0.5%	Rank history: #47 in FY2021, #56 in FY2023, #89 in FY2024 and #74 in FY2025; up 15 since FY2021.
33	TM3 Solutions, Inc. Top agencies WHS (DOD Washington Headquarters Service)	$12,621,341	0.5%	Rank history: #33 in FY2021, #41 in FY2023 and not on the FY2024–FY2025 lists; unchanged since FY2021.
34	Methuen Construction Co. Inc. Top agencies Navy (Department of the Navy)	$12,209,397	0.4%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
35	Jett's Specialty Contracting, LLC Top agencies VA (Department of Veterans Affairs)	$10,892,677	0.4%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
36	C.n.s. Communications, LLC Top agencies DOT (Department of Transportation)	$10,094,487	0.4%	Rank history: not on the FY2021 list, #42 in FY2023, #38 in FY2024 and #92 in FY2025; up 89 since FY2021.
37	Chickasaw Strategic Pointe, LLC Top agencies DOT (Department of Transportation)	$9,445,099	0.3%	Rank history: not on the FY2021 list, #34 in FY2023, #51 in FY2024 and #75 in FY2025; new.
38	Urban Electric, Inc. Top agencies DOT (Department of Transportation)	$9,195,226	0.3%	Rank history: not on the FY2021 list, #48 in FY2023, #56 in FY2024 and #96 in FY2025; up 102 since FY2021.
39	Government of Canada Through Canadian Commercial Corporation Top agencies USAF (Department of the Air Force)	$9,173,827	0.3%	Rank history: #39 in FY2021, #61 in FY2023 and not on the FY2024–FY2025 lists; unchanged since FY2021.
40	Vectrus Systems Corporation Through Advantor Systems II LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$8,808,964	0.3%	Rank history: #53 in FY2021, #60 in FY2023 and not on the FY2024–FY2025 lists; up 13 since FY2021.
41	Puyenpa Services, LLC Top agencies USAF (Department of the Air Force) DOI (Department of the Interior)	$8,709,576	0.3%	Rank history: #90 in FY2021 and not on the FY2023–FY2025 lists; up 49 since FY2021.
42	Quad J Inc. Top agencies DOT (Department of Transportation)	$8,057,716	0.3%	Rank history: #82 in FY2021, #69 in FY2023, #30 in FY2024 and #61 in FY2025; up 40 since FY2021.
43	Sei Group Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy) DCSA (Defense Counterintelligence and Security Agency)	$8,024,601	0.3%	Rank history: #57 in FY2021 and not on the FY2023–FY2025 lists; up 14 since FY2021.
44	Tyonek Native Corporatio Through Tyonek Services Overhaul Facility-Stennis, LLC Top agencies USAF (Department of the Air Force)	$7,673,408	0.3%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
45	Sierra Nevada Company, LLC Top agencies Navy (Department of the Navy)	$7,533,454	0.3%	Rank history: #63 in FY2021, #66 in FY2023, #53 in FY2024 and not on the FY2025 list; up 18 since FY2021.
46	Windstorm, Inc. Top agencies DHS (Department of Homeland Security)	$7,489,761	0.3%	Rank history: #94 in FY2021 and not on the FY2023–FY2025 lists; up 48 since FY2021.
47	Schneider Electric Buildings Americas Inc. 4 awardees, including Schneider Electric Federal, Inc. and Schneider Electric It Mission Critical Services, Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy) Treasury (Department of the Treasury)	$7,423,326	0.3%	Rank history: #45 in FY2021, #16 in FY2023 and not on the FY2024–FY2025 lists; down 2 since FY2021.
48	Epsilon Systems Solutions, Inc. Top agencies Navy (Department of the Navy)	$7,417,537	0.3%	Rank history: #54 in FY2021, #39 in FY2023, #60 in FY2024 and #71 in FY2025; up 6 since FY2021.
49	Herman Miller Inc. 2 awardees, including Knoll, Inc. and Millerknoll Inc. Top agencies HUD (Department of Housing and Urban Development) DHS (Department of Homeland Security) Army (Department of the Army)	$7,389,175	0.3%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 147 since FY2021.
50	Mantech International Corporation Through Mantech Advanced Systems International, Inc. Top agencies Navy (Department of the Navy)	$7,385,500	0.3%	Rank history: #40 in FY2021 and not on the FY2023–FY2025 lists; down 10 since FY2021.
51	Justin J. Reeves L.L.C. Top agencies Army (Department of the Army)	$7,222,847	0.3%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
52	General Dynamics Corporation 4 awardees, including General Dynamics Information Technology, Inc., General Dynamics Mission Systems, Inc. and Electric Boat Corporation Top agencies Navy (Department of the Navy)	$6,966,343	0.3%	Rank history: not on the FY2021 list, #50 in FY2023, #52 in FY2024 and not on the FY2025 list; up 76 since FY2021.
53	Planate-Argo Federal Services Joint Venture LLC Top agencies Navy (Department of the Navy)	$6,864,671	0.3%	Rank history: #95 in FY2021, not on the FY2023 list, #55 in FY2024 and not on the FY2025 list; up 42 since FY2021.
54	Electripro, Inc. Top agencies DHS (Department of Homeland Security) HHS (Department of Health and Human Services)	$6,755,199	0.2%	Rank history: not on the FY2021 list, #82 in FY2023, not on the FY2024 list and #85 in FY2025; new.
55	Teya Enterprises LLC Top agencies DHS (Department of Homeland Security)	$6,529,819	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
56	Mule Engineering, Inc. Top agencies VA (Department of Veterans Affairs)	$6,285,977	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
57	The Tatitlek Corporation 2 awardees, including Tatitlek Federal Services LLC and Tatitlek Technologies, LLC Top agencies DHS (Department of Homeland Security) DOS (Department of State)	$6,203,539	0.2%	Rank history: not on the FY2021 list, #44 in FY2023 and not on the FY2024–FY2025 lists; up 232 since FY2021.
58	Cynergy Professional Systems LLC Top agencies VA (Department of Veterans Affairs) USAID (US Agency for International Development) USAF (Department of the Air Force)	$6,163,766	0.2%	Rank history: #91 in FY2021 and not on the FY2023–FY2025 lists; up 33 since FY2021.
59	Cook Inlet Region Inc. 2 awardees, including Silver Mountain Construction, LLC and Weldin Construction LLC Top agencies DHS (Department of Homeland Security) USAF (Department of the Air Force)	$5,989,975	0.2%	Rank history: #38 in FY2021 and not on the FY2023–FY2025 lists; down 21 since FY2021.
60	Hawk Contracting Group LLC Top agencies VA (Department of Veterans Affairs)	$5,940,642	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
61	Infotec Systems Corp Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$5,853,181	0.2%	Rank history: #65 in FY2021, #53 in FY2023 and not on the FY2024–FY2025 lists; up 4 since FY2021.
62	Accelint Global Inc. Top agencies Navy (Department of the Navy)	$5,797,015	0.2%	Rank history: #56 in FY2021, #86 in FY2023, #68 in FY2024 and not on the FY2025 list; down 6 since FY2021.
63	Oneida Nation Through Mission Support Services, LLC Top agencies DHS (Department of Homeland Security)	$5,682,299	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 231 since FY2021.
64	Evergreen Fire Alarms LLC Top agencies Army (Department of the Army) Navy (Department of the Navy)	$5,617,802	0.2%	Rank history: not on the FY2021 list, #36 in FY2023, not on the FY2024 list and #76 in FY2025; new.
65	Xator LLC Top agencies Army (Department of the Army) DOS (Department of State)	$5,248,855	0.2%	Rank history: #22 in FY2021 and not on the FY2023–FY2025 lists; down 43 since FY2021.
66	Wildflower International, Ltd. Top agencies DISA (Defense Information Systems Agency) Army (Department of the Army)	$5,129,641	0.2%	Rank history: #46 in FY2021 and not on the FY2023–FY2025 lists; down 20 since FY2021.
67	American VET Industries LLC Top agencies VA (Department of Veterans Affairs)	$4,997,043	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
68	Corelogix Consulting Inc. Top agencies DHS (Department of Homeland Security)	$4,916,279	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
69	Purvis Systems Inc. Top agencies Navy (Department of the Navy)	$4,851,853	0.2%	Rank history: #59 in FY2021 and not on the FY2023–FY2025 lists; down 10 since FY2021.
70	Timberline Construction Group, LLC Top agencies DHS (Department of Homeland Security)	$4,830,744	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
71	Barry Williams Electric Inc. Top agencies DOT (Department of Transportation)	$4,654,057	0.2%	Rank history: not on the FY2021 list, #55 in FY2023 and not on the FY2024–FY2025 lists; new.
72	Arotech Corporation 2 awardees, including UEC Electronics, LLC and Faac Incorporated Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$4,376,228	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
73	Industries for the Blind and Visually Impaired, Inc. Top agencies DOI (Department of the Interior)	$4,357,810	0.2%	Rank history: #69 in FY2021, not on the FY2023 list, #81 in FY2024 and not on the FY2025 list; down 4 since FY2021.
74	Heritage Interiors LLC Top agencies DOE (Department of Energy) USDA (Department of Agriculture)	$4,238,213	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 113 since FY2021.
75	Valkyrie Enterprises, LLC 2 awardees Top agencies Navy (Department of the Navy) Army (Department of the Army) DOS (Department of State)	$4,208,317	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 88 since FY2021.
76	Eshraqat Al Taqaddom Contractors Establishment Top agencies USAF (Department of the Air Force)	$4,195,585	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
77	Colossal Contracting LLC Top agencies DISA (Defense Information Systems Agency) Treasury (Department of the Treasury) VA (Department of Veterans Affairs)	$4,086,840	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
78	Trinity of Utah Incorporated Top agencies Army (Department of the Army)	$3,993,349	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
79	Nana Regional Corporation Inc 2 awardees, including Jade Creek Construction LLC and Talu LLC Top agencies DOJ (Department of Justice) HHS (Department of Health and Human Services)	$3,877,057	0.1%	Rank history: #44 in FY2021 and not on the FY2023–FY2025 lists; down 35 since FY2021.
80	L3Harris Technologies, Inc. 4 awardees, including L3Harris Technologies Integrated Systems L.P. and L3Harris Maritime Services Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$3,876,529	0.1%	Rank history: #31 in FY2021, not on the FY2023 list, #61 in FY2024 and #53 in FY2025; down 49 since FY2021.
81	Nadiad Inc. Top agencies Navy (Department of the Navy)	$3,839,698	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
82	Saudi Naval Support Co. Top agencies USAF (Department of the Air Force)	$3,822,162	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
83	D Square Construction LLC Top agencies VA (Department of Veterans Affairs)	$3,683,000	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
84	Cambridge International Systems, Inc. Top agencies Navy (Department of the Navy)	$3,646,311	0.1%	Rank history: #77 in FY2021, not on the FY2023–FY2024 lists and #56 in FY2025; down 7 since FY2021.
85	Gunco. L.L.C. Top agencies Army (Department of the Army)	$3,588,449	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
86	QA Engineering LLC Top agencies USAF (Department of the Air Force) USDA (Department of Agriculture)	$3,446,603	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
87	Englobal Corporation Through Englobal Government Services Inc. Top agencies DLA (Defense Logistics Agency)	$3,407,550	0.1%	Rank history: not on the FY2021 list, #57 in FY2023 and not on the FY2024–FY2025 lists; new.
88	Vetetech Solution LLC Top agencies USAF (Department of the Air Force)	$3,405,103	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
89	Goodmans Inc. Top agencies DOE (Department of Energy)	$3,361,130	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
90	Integriward, LLC Top agencies DHS (Department of Homeland Security) Treasury (Department of the Treasury)	$3,349,862	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 45 since FY2021.
91	AES Electrical, LLC Top agencies National Gallery of Art	$3,318,939	0.1%	Rank history: not on the FY2021 list, #72 in FY2023 and not on the FY2024–FY2025 lists; new.
92	B2 Constructors, LLC Top agencies VA (Department of Veterans Affairs)	$3,081,238	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 235 since FY2021.
93	Koam Engineering Systems, Inc. Top agencies Navy (Department of the Navy)	$2,964,415	0.1%	Rank history: #84 in FY2021 and not on the FY2023–FY2025 lists; down 9 since FY2021.
94	Low Voltage Wiring Ltd Top agencies Army (Department of the Army) Navy (Department of the Navy) DHA (Defense Health Agency)	$2,959,040	0.1%	Rank history: #93 in FY2021, #68 in FY2023, #75 in FY2024 and #65 in FY2025; down 1 since FY2021.
95	Aspiryon LLC Top agencies DHS (Department of Homeland Security)	$2,957,669	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
96	Diamond Security, Inc. Top agencies Treasury (Department of the Treasury)	$2,906,912	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 197 since FY2021.
97	Building Associates Inc. Top agencies Navy (Department of the Navy)	$2,867,400	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
98	General and Mechanical Services, LLC Top agencies AFRH (Armed Forces Retirement Home)	$2,850,000	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
99	Sigma Defense Systems LLC Top agencies Navy (Department of the Navy) DISA (Defense Information Systems Agency) Army (Department of the Army)	$2,815,149	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 154 since FY2021.
100	Action Elevator Company LLC Top agencies AFRH (Armed Forces Retirement Home)	$2,766,331	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.

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100 of 1,713 contractors listed here. See the rest on GovTribe.

Rankings for the codes under PSC N

Code	Net obligations	Largest contractor
N0 Installation of Equipment	$2,614,218,880	The Boeing Company

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 $2.74 billion obligated before deobligations, so they never pass 100%.
Parent companies: each action counts under the ultimate parent its award record names, or under the awardee when it names none, so no dollar counts twice. Parents of the same name (Inc., LLC and the like aside) count as one company, since FPDS records a company's parent under more than one UEI over time. GovTribe corrects a few parents and names by hand; see the corrections.
Fiscal year 2022 ran Oct 1, 2021 – Sep 30, 2022. The Department of Defense reports its contract actions to FPDS about 90 days late, so a fiscal year is ranked once they're in, in February, and the list doesn't change after.
Rank changes compare with FY2021. "New" marks a company outside that period's top 500, and "Returned" one of those that was on an earlier fiscal year's list.
Rank lines show each company's rank on every fiscal year's list since FY2021, #1 at the top, on a scale that gives the top of the list more room. A dashed stretch spans years it wasn't on the list. The step from FY2021 takes the color of the rank change beside it.
Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

Quick answers

Who were the top 10 PSC N contractors in FY2022?

1. The Boeing Company ($398M), 2. Northrop Grumman Corporation ($284M), 3. Johnson Controls Security Solutions LLC ($182M), 4. M.c. Dean, Inc. ($145M), 5. MLU Services, LLC ($120M), 6. BAE Systems PLC ($90.6M), 7. Disaster Solutions Alliance, LLC ($59.6M), 8. Siemens Aktiengesellschaft ($49.1M), 9. Serco North America (Holdings) Inc ($48.5M), 10. Leidos Holdings, Inc. ($48M).

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