Top 100 Contractors in NAICS 56162: Security Systems Services, FY2022

Name: Top 100 Contractors in NAICS 56162: Security Systems Services, FY2022
Creator: GovTribe

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

The top 10 won 50% of FY2022 NAICS 56162 contract dollars

Contract obligations: $751,794,656 Net of deobligations, by contracts coded NAICS 56162 or a code under it
Contractors: 969 Parent companies with an obligation
Largest contractor: M. C. Dean Inc. $80.9 million, 10.1% 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	M. C. Dean Inc. Through M.c. Dean, Inc. Top agencies AOUSC (Administrative Office of the U.S. Courts) DOD (Department of Defense) DOT (Department of Transportation)	$80,875,332	10.1%	Rank history: #1 in FY2021, #1 in FY2023, #1 in FY2024 and #1 in FY2025; unchanged since FY2021.
2	Advanced Technology Systems Company, Inc. (OF Virginia) Top agencies USAF (Department of the Air Force)	$76,465,937	9.6%	Rank history: #37 in FY2021, #14 in FY2023, #4 in FY2024 and not on the FY2025 list; up 35 since FY2021.
3	Johnson Controls Security Solutions LLC 24 awardees, including Johnson Controls Building Automation Systems, LLC, Johnson Controls Fire Protection LP and Johnson Controls Inc. Top agencies AOUSC (Administrative Office of the U.S. Courts) DHS (Department of Homeland Security) Navy (Department of the Navy)	$57,741,186	7.2%	Rank history: #2 in FY2021, #3 in FY2023, #6 in FY2024 and #6 in FY2025; down 1 since FY2021.
4	Serco North America (Holdings) Inc Through Serco Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$46,196,483	5.8%	Rank history: #3 in FY2021, #7 in FY2023 and not on the FY2024–FY2025 lists; down 1 since FY2021.
5	Xator LLC Top agencies USAF (Department of the Air Force) DOS (Department of State)	$28,718,056	3.6%	Rank history: #7 in FY2021, #8 in FY2023, #31 in FY2024 and not on the FY2025 list; up 2 since FY2021.
6	Triple Canopy Inc. Top agencies DHS (Department of Homeland Security)	$28,027,943	3.5%	Rank history: #4 in FY2021 and not on the FY2023–FY2025 lists; down 2 since FY2021.
7	CACI International Inc. 5 awardees, including Caci, Inc. - Federal, Caci Nss, LLC and Charon Technologies LLC Top agencies USAF (Department of the Air Force) Treasury (Department of the Treasury)	$27,008,305	3.4%	Rank history: #5 in FY2021, #6 in FY2023, #7 in FY2024 and #5 in FY2025; down 2 since FY2021.
8	BCF Solutions, Inc. Top agencies USAF (Department of the Air Force)	$23,630,208	3.0%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
9	Securitas AB 3 awardees, including Paragon Systems Inc., Securitas Electronic Security, Inc. and Securitas OY Top agencies DHS (Department of Homeland Security) AOUSC (Administrative Office of the U.S. Courts) Treasury (Department of the Treasury)	$16,404,682	2.1%	Rank history: #68 in FY2021, #2 in FY2023, #5 in FY2024 and not on the FY2025 list; up 59 since FY2021.
10	The Chenega Corporation 3 awardees, including Chenega Integrated Security Solutions, LLC and Chenega Global Protection, LLC Top agencies DOJ (Department of Justice) MDA (DOD Missile Defense Agency) Treasury (Department of the Treasury)	$13,812,622	1.7%	Rank history: #6 in FY2021, #10 in FY2023 and not on the FY2024–FY2025 lists; down 4 since FY2021.
11	Diversified Protection Corp Top agencies DHS (Department of Homeland Security)	$10,292,265	1.3%	Rank history: #13 in FY2021 and not on the FY2023–FY2025 lists; up 2 since FY2021.
12	Versar Inc. 2 awardees, including Versar Security Systems, LLC Top agencies DOT (Department of Transportation) AOUSC (Administrative Office of the U.S. Courts) GAO (Government Accountability Office)	$10,192,418	1.3%	Rank history: #10 in FY2021, #12 in FY2023 and not on the FY2024–FY2025 lists; down 2 since FY2021.
13	Siemens Aktiengesellschaft 4 awardees, including Siemens Industry Inc. and Siemens Canada Limited Top agencies Commerce (Department of Commerce) VA (Department of Veterans Affairs) USAF (Department of the Air Force)	$9,813,025	1.2%	Rank history: #16 in FY2021, #28 in FY2023, #45 in FY2024 and not on the FY2025 list; up 3 since FY2021.
14	Media Plumbing & Heating Inc. Top agencies Navy (Department of the Navy) VA (Department of Veterans Affairs) Army (Department of the Army)	$9,517,256	1.2%	Rank history: #14 in FY2021, #22 in FY2023, #17 in FY2024 and #14 in FY2025; unchanged since FY2021.
15	Trofholz Technologies, Inc. Top agencies DOI (Department of the Interior) USSOCOM (United States Special Operations Command) Navy (Department of the Navy)	$8,159,042	1.0%	Rank history: #19 in FY2021, #15 in FY2023, #22 in FY2024 and #24 in FY2025; up 4 since FY2021.
16	Corelogix Consulting Inc. Top agencies DHS (Department of Homeland Security)	$7,423,635	0.9%	Rank history: #80 in FY2021, #34 in FY2023, #91 in FY2024 and #70 in FY2025; up 64 since FY2021.
17	Chenega Security International, LLC Top agencies HHS (Department of Health and Human Services) USAF (Department of the Air Force) Army (Department of the Army)	$7,209,957	0.9%	Rank history: #12 in FY2021, #76 in FY2023 and not on the FY2024–FY2025 lists; down 5 since FY2021.
18	Electripro, Inc. Top agencies DHS (Department of Homeland Security) NASA (National Aeronautics and Space Administration) Army (Department of the Army)	$6,820,133	0.9%	Rank history: not on the FY2021 list, #36 in FY2023, not on the FY2024 list and #33 in FY2025; up 167 since FY2021.
19	Indyne, Inc. 2 awardees Top agencies USAF (Department of the Air Force)	$6,657,204	0.8%	Rank history: #15 in FY2021, #26 in FY2023, #21 in FY2024 and #18 in FY2025; down 4 since FY2021.
20	SRC Inc. Through Srctec, LLC Top agencies USAF (Department of the Air Force)	$6,166,228	0.8%	Rank history: #9 in FY2021, #17 in FY2023, #100 in FY2024 and not on the FY2025 list; down 11 since FY2021.
21	Versar Security Systems, LLC Top agencies DOT (Department of Transportation) DLA (Defense Logistics Agency)	$5,970,515	0.7%	Rank history: not on the FY2021 list, #25 in FY2023, #11 in FY2024 and #20 in FY2025; new.
22	Itm4G LLC Top agencies Army (Department of the Army) DHS (Department of Homeland Security)	$5,892,828	0.7%	Rank history: #43 in FY2021, #24 in FY2023, #26 in FY2024 and #21 in FY2025; up 21 since FY2021.
23	Scdatacom, LLC 2 awardees Top agencies VA (Department of Veterans Affairs) DHS (Department of Homeland Security) DOI (Department of the Interior)	$5,694,075	0.7%	Rank history: #74 in FY2021, #18 in FY2023, #12 in FY2024 and #11 in FY2025; up 51 since FY2021.
24	Oneida Nation Through Mission Support Services, LLC Top agencies DHS (Department of Homeland Security)	$5,682,299	0.7%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
25	Smiths Group PLC Through Smiths Detection Inc. Top agencies DHS (Department of Homeland Security) DOS (Department of State) AOUSC (Administrative Office of the U.S. Courts)	$5,628,566	0.7%	Rank history: not on the FY2021 list, #79 in FY2023 and not on the FY2024–FY2025 lists; up 198 since FY2021.
26	Booz Allen Hamilton Holding Corporation Through Booz Allen Hamilton Inc. Top agencies EPA (Environmental Protection Agency) DHS (Department of Homeland Security)	$5,310,889	0.7%	Rank history: #17 in FY2021, #42 in FY2023 and not on the FY2024–FY2025 lists; down 9 since FY2021.
27	Hurtvet Subcontracting, Inc. Top agencies VA (Department of Veterans Affairs) DOI (Department of the Interior) USAF (Department of the Air Force)	$5,145,608	0.6%	Rank history: #18 in FY2021, #16 in FY2023, #24 in FY2024 and #27 in FY2025; down 9 since FY2021.
28	Electri-Comm Inc. Top agencies VA (Department of Veterans Affairs)	$4,146,000	0.5%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
29	Cherokee Nation 2 awardees, including Cherokee Federal Solutions, L.L.C. Top agencies Treasury (Department of the Treasury) Army (Department of the Army)	$4,142,781	0.5%	Rank history: #32 in FY2021 and not on the FY2023–FY2025 lists; up 3 since FY2021.
30	Cherokee Nation System Solutions LLC Top agencies Treasury (Department of the Treasury)	$4,121,456	0.5%	Rank history: #39 in FY2021, #19 in FY2023, #16 in FY2024 and not on the FY2025 list; up 9 since FY2021.
31	Evergreen Fire Alarms LLC 2 awardees Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$3,991,045	0.5%	Rank history: #11 in FY2021, #21 in FY2023, #30 in FY2024 and #17 in FY2025; down 20 since FY2021.
32	Aspiryon LLC Top agencies DHS (Department of Homeland Security) Army (Department of the Army)	$3,908,993	0.5%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 152 since FY2021.
33	Cynergy Professional Systems LLC Top agencies VA (Department of Veterans Affairs) USAID (US Agency for International Development)	$3,821,638	0.5%	Rank history: #72 in FY2021, #58 in FY2023, #69 in FY2024 and #43 in FY2025; up 39 since FY2021.
34	Concord Crossroads LLC Top agencies Army (Department of the Army)	$3,795,422	0.5%	Rank history: #30 in FY2021, #35 in FY2023, #60 in FY2024 and not on the FY2025 list; down 4 since FY2021.
35	Gonzales Consulting Services Inc. Top agencies SSA (Social Security Administration)	$3,360,265	0.4%	Rank history: #34 in FY2021, #46 in FY2023 and not on the FY2024–FY2025 lists; down 1 since FY2021.
36	Vista Defense Technologies, LLC Top agencies Army (Department of the Army)	$3,306,341	0.4%	Rank history: #25 in FY2021, #40 in FY2023, #32 in FY2024 and #29 in FY2025; down 11 since FY2021.
37	Integriward, LLC Top agencies DHS (Department of Homeland Security) Treasury (Department of the Treasury) WHS (DOD Washington Headquarters Service)	$3,303,360	0.4%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 250 since FY2021.
38	Usmax Corporation Top agencies USAID (US Agency for International Development) DOS (Department of State) USAGM (US Agency for Global Media)	$3,208,123	0.4%	Rank history: #28 in FY2021, #50 in FY2023, not on the FY2024 list and #53 in FY2025; down 10 since FY2021.
39	Diamond Security, Inc. Top agencies Treasury (Department of the Treasury) Navy (Department of the Navy) DHS (Department of Homeland Security)	$3,076,931	0.4%	Rank history: #76 in FY2021, #60 in FY2023 and not on the FY2024–FY2025 lists; up 37 since FY2021.
40	Tic Security, LLC Top agencies SEC (Securities and Exchange Commission) DHS (Department of Homeland Security) Commerce (Department of Commerce)	$3,069,764	0.4%	Rank history: #27 in FY2021 and not on the FY2023–FY2025 lists; down 13 since FY2021.
41	Firelake Construction Inc. 2 awardees Top agencies Army (Department of the Army)	$2,836,822	0.4%	Rank history: #31 in FY2021, #38 in FY2023, #29 in FY2024 and #23 in FY2025; down 10 since FY2021.
42	Olgoonik Corporation Through Olgoonik Solutions LLC Top agencies DOE (Department of Energy)	$2,833,382	0.4%	Rank history: #26 in FY2021, #33 in FY2023, #95 in FY2024 and not on the FY2025 list; down 16 since FY2021.
43	Global Resource Solutions Inc. Top agencies DHS (Department of Homeland Security) USAF (Department of the Air Force)	$2,794,814	0.4%	Rank history: #40 in FY2021, #32 in FY2023, #36 in FY2024 and #26 in FY2025; down 3 since FY2021.
44	KBR Wyle Services, LLC Top agencies DOT (Department of Transportation)	$2,768,597	0.3%	Rank history: not on the FY2021 list, #48 in FY2023 and not on the FY2024–FY2025 lists; new.
45	Total-Evergreen JV LLC Top agencies Army (Department of the Army)	$2,735,310	0.3%	Rank history: not on the FY2021 list, #43 in FY2023, #38 in FY2024 and #42 in FY2025; new.
46	Communications Resource Inc. Top agencies CSOSA (Court Services and Offender Supervision Agency) Commerce (Department of Commerce) Treasury (Department of the Treasury)	$2,707,751	0.3%	Rank history: #47 in FY2021, not on the FY2023 list, #54 in FY2024 and #96 in FY2025; up 1 since FY2021.
47	Kastle Systems LLC Top agencies SEC (Securities and Exchange Commission) SBA (Small Business Administration) Treasury (Department of the Treasury)	$2,619,619	0.3%	Rank history: #36 in FY2021, #53 in FY2023, #56 in FY2024 and #71 in FY2025; down 11 since FY2021.
48	KR Contracting Inc. Top agencies OPM (Office of Personnel Management)	$2,545,611	0.3%	Rank history: #44 in FY2021, #47 in FY2023, #81 in FY2024 and #49 in FY2025; down 4 since FY2021.
49	Fiber Business Solutions Group Inc. Top agencies GSA (General Services Administration) DOI (Department of the Interior)	$2,536,703	0.3%	Rank history: #66 in FY2021 and not on the FY2023–FY2025 lists; up 17 since FY2021.
50	Veterans Fire and Life Safety Corporation Top agencies VA (Department of Veterans Affairs) Commerce (Department of Commerce)	$2,521,835	0.3%	Rank history: not on the FY2021 list, not on the FY2023 list, #47 in FY2024 and #28 in FY2025; up 74 since FY2021.
51	Parsons Corporation 3 awardees, including Ptsi Managed Services Inc. and Williams Electric Co Inc. Top agencies Smithsonian (Smithsonian Institution) Army (Department of the Army)	$2,501,998	0.3%	Rank history: not on the FY2021 list, #31 in FY2023, #19 in FY2024 and #7 in FY2025; up 144 since FY2021.
52	HEI Security LLC Top agencies VA (Department of Veterans Affairs) DHS (Department of Homeland Security) Commerce (Department of Commerce)	$2,475,757	0.3%	Rank history: not on the FY2021 list, not on the FY2023 list, #87 in FY2024 and not on the FY2025 list; up 146 since FY2021.
53	Adamo Construction Inc. Top agencies Navy (Department of the Navy)	$2,449,369	0.3%	Rank history: #33 in FY2021, #51 in FY2023 and not on the FY2024–FY2025 lists; down 20 since FY2021.
54	Forus Contracting, Inc. Top agencies VA (Department of Veterans Affairs) Commerce (Department of Commerce) NARA (National Archives and Records Administration)	$2,445,857	0.3%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 57 since FY2021.
55	Axis Global Enterprises, Inc. Top agencies DHS (Department of Homeland Security) USAF (Department of the Air Force)	$2,312,783	0.3%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 295 since FY2021.
56	OSI Systems Inc. 2 awardees, including Rapiscan Systems Inc. and American Science & Engineering Inc. Top agencies DOS (Department of State) DOJ (Department of Justice) USAF (Department of the Air Force)	$2,200,180	0.3%	Rank history: #46 in FY2021 and not on the FY2023–FY2025 lists; down 10 since FY2021.
57	Afognak Native Corporation 5 awardees, including Shields Point LLC, Alutiiq Professional Training, LLC and Alutiiq Information Management, LLC Top agencies DHS (Department of Homeland Security) Navy (Department of the Navy) USAF (Department of the Air Force)	$2,086,367	0.3%	Rank history: #49 in FY2021 and not on the FY2023–FY2025 lists; down 8 since FY2021.
58	National Contracting Services, LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) DOJ (Department of Justice)	$2,063,434	0.3%	Rank history: #64 in FY2021, #75 in FY2023 and not on the FY2024–FY2025 lists; up 6 since FY2021.
59	Ldia Holdings, LLC Top agencies USAF (Department of the Air Force)	$2,033,964	0.3%	Rank history: not on the FY2021 list, #95 in FY2023, #73 in FY2024 and #61 in FY2025; up 59 since FY2021.
60	Signet Technologies Inc. 5 awardees, including Convergint Technologies LLC, T.l. Garden & Associates, Inc. and Integrated Security Systems Inc. Top agencies DISA (Defense Information Systems Agency) DLA (Defense Logistics Agency) OPM (Office of Personnel Management)	$2,018,697	0.3%	Rank history: #38 in FY2021, #30 in FY2023, #37 in FY2024 and #65 in FY2025; down 22 since FY2021.
61	Vectrus Systems Corporation Through Advantor Systems II LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$1,991,884	0.2%	Rank history: #21 in FY2021, #23 in FY2023 and not on the FY2024–FY2025 lists; down 40 since FY2021.
62	Integrated Security Technologies Inc. Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) USAF (Department of the Air Force)	$1,935,168	0.2%	Rank history: #35 in FY2021, #39 in FY2023, #34 in FY2024 and #59 in FY2025; down 27 since FY2021.
63	Honeywell International Inc. 5 awardees, including Vindicator Technologies, Inc. Top agencies USAF (Department of the Air Force) VA (Department of Veterans Affairs) Army (Department of the Army)	$1,903,543	0.2%	Rank history: #93 in FY2021, #41 in FY2023 and not on the FY2024–FY2025 lists; up 30 since FY2021.
64	J2 Associates, LLC Top agencies DOT (Department of Transportation) DLA (Defense Logistics Agency) USAF (Department of the Air Force)	$1,899,552	0.2%	Rank history: #77 in FY2021, not on the FY2023 list, #89 in FY2024 and #58 in FY2025; up 13 since FY2021.
65	Systems Engineering Inc. Top agencies MDA (DOD Missile Defense Agency) DOI (Department of the Interior) NTSB (National Transportation Safety Board)	$1,880,320	0.2%	Rank history: not on the FY2021 list, #52 in FY2023 and not on the FY2024–FY2025 lists; up 115 since FY2021.
66	Puyenpa Services, LLC Top agencies NRC (Nuclear Regulatory Commission)	$1,878,477	0.2%	Rank history: not on the FY2021 list, not on the FY2023 list, #58 in FY2024 and not on the FY2025 list; new.
67	Nana Regional Corporation Inc. Through Lockwood Hills Federal LLC Top agencies Army (Department of the Army)	$1,827,310	0.2%	Rank history: not on the FY2021 list, #74 in FY2023, not on the FY2024 list and #88 in FY2025; new.
68	Trilogy Secured Services, L.l.c Top agencies DHS (Department of Homeland Security) Commerce (Department of Commerce) DOJ (Department of Justice)	$1,737,840	0.2%	Rank history: #59 in FY2021, #20 in FY2023, #28 in FY2024 and #86 in FY2025; down 9 since FY2021.
69	Kbr, Inc. 3 awardees, including KBR Wyle Services, LLC Top agencies DOT (Department of Transportation) AOUSC (Administrative Office of the U.S. Courts)	$1,696,554	0.2%	Rank history: #8 in FY2021, #11 in FY2023, #88 in FY2024 and not on the FY2025 list; down 61 since FY2021.
70	Secsol Inc. Top agencies VA (Department of Veterans Affairs)	$1,684,242	0.2%	Rank history: #85 in FY2021, not on the FY2023 list, #82 in FY2024 and #95 in FY2025; up 15 since FY2021.
71	Virsig, LLC Top agencies VA (Department of Veterans Affairs) Navy (Department of the Navy)	$1,599,809	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 93 since FY2021.
72	Aurora Technical Systems, LLC Top agencies Treasury (Department of the Treasury)	$1,584,378	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
73	Hana Technologies & Systems, Inc. Top agencies Navy (Department of the Navy)	$1,488,616	0.2%	Rank history: not on the FY2021 list, #82 in FY2023, #80 in FY2024 and not on the FY2025 list; new.
74	Johnsondanforth, Inc. Top agencies VA (Department of Veterans Affairs)	$1,463,811	0.2%	Rank history: #52 in FY2021, #83 in FY2023, #94 in FY2024 and #72 in FY2025; down 22 since FY2021.
75	HQE Systems, Inc. Top agencies USAF (Department of the Air Force) DHS (Department of Homeland Security) HHS (Department of Health and Human Services)	$1,420,020	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 92 since FY2021.
76	Cintron Lock & Safe, Inc. Top agencies DOS (Department of State)	$1,359,445	0.2%	Rank history: #62 in FY2021 and not on the FY2023–FY2025 lists; down 14 since FY2021.
77	American Engineering Corporation Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$1,336,450	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
78	Connected Technology Integrators, Inc. Top agencies VA (Department of Veterans Affairs) USAF (Department of the Air Force) Army (Department of the Army)	$1,302,880	0.2%	Rank history: #75 in FY2021 and not on the FY2023–FY2025 lists; down 3 since FY2021.
79	Apogee-Ssu Joint Venture LLC Top agencies DHS (Department of Homeland Security)	$1,300,919	0.2%	Rank history: #99 in FY2021 and not on the FY2023–FY2025 lists; up 20 since FY2021.
80	Systems Northwest, LLC Top agencies HHS (Department of Health and Human Services)	$1,242,598	0.2%	Rank history: #57 in FY2021, #62 in FY2023, #53 in FY2024 and #44 in FY2025; down 23 since FY2021.
81	Lbyd Federal, LLC Top agencies OSD (Office of the Secretary of Defense)	$1,242,460	0.2%	Rank history: #45 in FY2021, #45 in FY2023, #48 in FY2024 and #46 in FY2025; down 36 since FY2021.
82	Eagle Fire Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$1,201,754	0.2%	Rank history: not on the FY2021 list, #96 in FY2023 and not on the FY2024–FY2025 lists; up 62 since FY2021.
83	Onerain Incorporated Top agencies DOI (Department of the Interior)	$1,153,938	0.1%	Rank history: #69 in FY2021, #94 in FY2023, #93 in FY2024 and #66 in FY2025; down 14 since FY2021.
84	Citizen Contracting Group LLC Top agencies VA (Department of Veterans Affairs)	$1,095,073	0.1%	Rank history: not on the FY2021 list, #49 in FY2023 and not on the FY2024–FY2025 lists; new.
85	F-Concepts, Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy)	$1,086,535	0.1%	Rank history: #97 in FY2021, not on the FY2023 list, #72 in FY2024 and #83 in FY2025; up 12 since FY2021.
86	Optimum Low Voltage LLC Top agencies VA (Department of Veterans Affairs) Commerce (Department of Commerce) DOI (Department of the Interior)	$1,069,642	0.1%	Rank history: #82 in FY2021, #84 in FY2023 and not on the FY2024–FY2025 lists; down 4 since FY2021.
87	Security2000 LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) VA (Department of Veterans Affairs)	$1,057,682	0.1%	Rank history: #50 in FY2021, #99 in FY2023, #83 in FY2024 and #78 in FY2025; down 37 since FY2021.
88	Intellimar Inc. 2 awardees, including Concentric Security LLC Top agencies DOT (Department of Transportation) USAF (Department of the Air Force) National Gallery of Art	$1,024,634	0.1%	Rank history: not on the FY2021 list, #64 in FY2023 and not on the FY2024–FY2025 lists; up 13 since FY2021.
89	Fire & Access Control Systems.com, Inc. Top agencies Army (Department of the Army)	$1,019,189	0.1%	Rank history: #29 in FY2021 and not on the FY2023–FY2025 lists; down 60 since FY2021.
90	Professionals HIR LLC Top agencies Navy (Department of the Navy) Commerce (Department of Commerce) USAF (Department of the Air Force)	$1,003,344	0.1%	Rank history: #22 in FY2021, not on the FY2023 list, #59 in FY2024 and #57 in FY2025; down 68 since FY2021.
91	M3T Corporation Top agencies Army (Department of the Army) VA (Department of Veterans Affairs) DOJ (Department of Justice)	$992,385	0.1%	Rank history: #91 in FY2021, not on the FY2023 list, #74 in FY2024 and #68 in FY2025; unchanged since FY2021.
92	Government Contracting Services LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$987,051	0.1%	Rank history: not on the FY2021 list, #86 in FY2023 and not on the FY2024–FY2025 lists; up 79 since FY2021.
93	Active Security Consulting LLC Top agencies DHS (Department of Homeland Security) USAF (Department of the Air Force) DOJ (Department of Justice)	$984,852	0.1%	Rank history: #70 in FY2021 and not on the FY2023–FY2025 lists; down 23 since FY2021.
94	Echelon Services, LLC Top agencies HUD (Department of Housing and Urban Development)	$939,431	0.1%	Rank history: #71 in FY2021, #55 in FY2023, #49 in FY2024 and #31 in FY2025; down 23 since FY2021.
95	Stanley Black & Decker, Inc. 5 awardees, including Securitas Technology Corporation and Stanley Security Solutions, Inc. Top agencies DOJ (Department of Justice) DOS (Department of State) Treasury (Department of the Treasury)	$924,596	0.1%	Rank history: #88 in FY2021 and not on the FY2023–FY2025 lists; down 7 since FY2021.
96	Van Cleve & Associates, Inc. Top agencies DOJ (Department of Justice) Navy (Department of the Navy) OSD (Office of the Secretary of Defense)	$900,777	0.1%	Rank history: not on the FY2021 list, not on the FY2023 list, #77 in FY2024 and not on the FY2025 list; up 94 since FY2021.
97	Starboard Industries LLC Top agencies VA (Department of Veterans Affairs)	$853,065	0.1%	Rank history: #79 in FY2021 and not on the FY2023–FY2025 lists; down 18 since FY2021.
98	SKE Support Services GMBH Top agencies Army (Department of the Army)	$839,023	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
99	Ranger Elite Management, LLC Top agencies VA (Department of Veterans Affairs)	$826,280	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 74 since FY2021.
100	Ma Impianti S.R.L. Top agencies Army (Department of the Army)	$809,880	0.1%	Rank history: #89 in FY2021, #54 in FY2023, not on the FY2024 list and #92 in FY2025; down 11 since FY2021.

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100 of 969 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 56162

Code	Net obligations	Largest contractor
561621 Security Systems Services (except Locksmiths)	$744,291,297	M. C. Dean Inc.
561622 Locksmiths	$7,503,359	Cintron Lock & Safe, 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 $798 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 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 NAICS 56162 contractors in FY2022?

1. M. C. Dean Inc. ($80.9M), 2. Advanced Technology Systems Company, Inc. (OF Virginia) ($76.5M), 3. Johnson Controls Security Solutions LLC ($57.7M), 4. Serco North America (Holdings) Inc ($46.2M), 5. Xator LLC ($28.7M), 6. Triple Canopy Inc. ($28M), 7. CACI International Inc. ($27M), 8. BCF Solutions, Inc. ($23.6M), 9. Securitas AB ($16.4M), 10. The Chenega Corporation ($13.8M).

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