Top 100 Contractors in PSC J063: Maintenance, Repair and Rebuilding of Equipment: Alarm, Signal, and Security Detection Systems, FY2024

Name: Top 100 Contractors in PSC J063: Maintenance, Repair and Rebuilding of Equipment: Alarm, Signal, and Security Detection Systems, FY2024
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2023 – Sep 30, 2024 Code page on GovTribe

The top 10 won 81% of FY2024 PSC J063 contract dollars

Contract obligations: $756,919,310 Net of deobligations, by contracts coded PSC J063
Contractors: 533 Parent companies with an obligation
Largest contractor: Techflow, Inc. $267 million, 34.6% 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	Techflow, Inc. Top agencies DHS (Department of Homeland Security)	$267,362,293	34.6%	Rank history: #1 in FY2021, #1 in FY2022, #1 in FY2023 and #1 in FY2025; unchanged since FY2023.
2	Leidos Holdings, Inc. 3 awardees, including Leidos, Inc. and Leidos Security Detection & Automation, Inc. Top agencies DHS (Department of Homeland Security) USAF (Department of the Air Force) Army (Department of the Army)	$204,991,676	26.5%	Rank history: #2 in FY2021, #2 in FY2022, #2 in FY2023 and #2 in FY2025; unchanged since FY2023.
3	General Dynamics Corporation Through General Dynamics Mission Systems, Inc. Top agencies Navy (Department of the Navy)	$47,276,959	6.1%	Rank history: #3 in FY2021, #4 in FY2022, #4 in FY2023 and #3 in FY2025; up 1 since FY2023.
4	M.c. Dean, Inc. Top agencies AOUSC (Administrative Office of the U.S. Courts) Navy (Department of the Navy) OSD (Office of the Secretary of Defense)	$33,679,262	4.4%	Rank history: #4 in FY2021, #3 in FY2022, #3 in FY2023 and #4 in FY2025; down 1 since FY2023.
5	Science Applications International Corporation 2 awardees Top agencies USAF (Department of the Air Force)	$21,921,615	2.8%	Rank history: #5 in FY2021, #5 in FY2022, #5 in FY2023 and #5 in FY2025; unchanged since FY2023.
6	KBR Wyle Services LLC 2 awardees Top agencies Navy (Department of the Navy) DOT (Department of Transportation)	$13,680,720	1.8%	Rank history: not on the FY2021–FY2023 lists and #6 in FY2025; new.
7	Sentrillion Corporation Top agencies DHS (Department of Homeland Security)	$11,871,627	1.5%	Rank history: not on the FY2021 list, #48 in FY2022, #9 in FY2023 and #7 in FY2025; up 2 since FY2023.
8	V2X, Inc. Through Advantor Systems II LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$7,375,067	1.0%	Rank history: not on the FY2021–FY2023 lists and #9 in FY2025; new.
9	Kbr, Inc. 2 awardees, including KBR Wyle Services, LLC Top agencies Navy (Department of the Navy) DOT (Department of Transportation)	$7,075,005	0.9%	Rank history: #8 in FY2021, #39 in FY2022, #8 in FY2023 and not on the FY2025 list; down 1 since FY2023.
10	Omniplex World Services Corp Through Triple Canopy Inc. Top agencies DHS (Department of Homeland Security)	$6,535,296	0.8%	Rank history: not on the FY2021–FY2022 lists, #6 in FY2023 and not on the FY2025 list; down 4 since FY2023.
11	Cynergy Professional Systems LLC Top agencies DOJ (Department of Justice) VA (Department of Veterans Affairs)	$5,896,259	0.8%	Rank history: #9 in FY2021, #8 in FY2022, #10 in FY2023 and #13 in FY2025; down 1 since FY2023.
12	Triple Canopy Inc. Top agencies DHS (Department of Homeland Security)	$5,658,855	0.7%	Rank history: not on the FY2021–FY2023 lists and #8 in FY2025; up 167 since FY2023.
13	Cherokee Nation Security & Defense LLC Through Cherokee Federal Solutions, L.L.C. Top agencies Treasury (Department of the Treasury) Army (Department of the Army)	$5,095,376	0.7%	Rank history: not on the FY2021–FY2022 lists, #28 in FY2023 and #12 in FY2025; up 15 since FY2023.
14	Trofholz Technologies Inc. 2 awardees Top agencies USSOCOM (United States Special Operations Command) VA (Department of Veterans Affairs) USDA (Department of Agriculture)	$4,363,007	0.6%	Rank history: #12 in FY2021, #13 in FY2022, #12 in FY2023 and #16 in FY2025; down 2 since FY2023.
15	Signet Technologies, Inc. 3 awardees, including Convergint Technologies LLC Top agencies DHS (Department of Homeland Security) DISA (Defense Information Systems Agency) DLA (Defense Logistics Agency)	$3,970,010	0.5%	Rank history: #17 in FY2021, #20 in FY2022, #23 in FY2023 and #17 in FY2025; up 8 since FY2023.
16	Media Plumbing & Heating Inc. Top agencies Army (Department of the Army) DLA (Defense Logistics Agency) Commerce (Department of Commerce)	$3,509,282	0.5%	Rank history: #71 in FY2021, #44 in FY2022, #41 in FY2023 and #14 in FY2025; up 25 since FY2023.
17	BAE Systems Through BAE Systems Technology Solutions & Services Inc. Top agencies Navy (Department of the Navy)	$3,098,607	0.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
18	Sev1Tech, LLC Top agencies Navy (Department of the Navy)	$3,052,675	0.4%	Rank history: #74 in FY2021, #15 in FY2022, #7 in FY2023 and #90 in FY2025; down 11 since FY2023.
19	Evergreen Fire Alarms LLC Top agencies Army (Department of the Army) Navy (Department of the Navy)	$2,941,442	0.4%	Rank history: #19 in FY2021, #24 in FY2022, #14 in FY2023 and #20 in FY2025; down 5 since FY2023.
20	Smiths Detection Inc. Top agencies AOUSC (Administrative Office of the U.S. Courts) DHS (Department of Homeland Security) DOS (Department of State)	$2,878,603	0.4%	Rank history: not on the FY2021–FY2023 lists and #10 in FY2025; new.
21	Johnson Controls Inc 2 awardees, including Johnson Controls Fire Protection LP Top agencies VA (Department of Veterans Affairs) DISA (Defense Information Systems Agency) DLA (Defense Logistics Agency)	$2,661,152	0.3%	Rank history: not on the FY2021–FY2023 lists and #11 in FY2025; new.
22	Johnson Controls Industries 3 awardees, including Johnson Controls, Inc. and Johnson Controls Building Automation Systems, LLC Top agencies VA (Department of Veterans Affairs) DISA (Defense Information Systems Agency) USAF (Department of the Air Force)	$2,597,321	0.3%	Rank history: not on the FY2021–FY2022 lists, #18 in FY2023 and not on the FY2025 list; down 4 since FY2023.
23	Johnson Controls Security Solutions LLC 5 awardees, including Johnson Controls, Inc. Top agencies DHS (Department of Homeland Security) Navy (Department of the Navy) AOUSC (Administrative Office of the U.S. Courts)	$2,374,963	0.3%	Rank history: #7 in FY2021, #7 in FY2022, #19 in FY2023 and #25 in FY2025; down 4 since FY2023.
24	Honeywell International Inc. 3 awardees Top agencies VA (Department of Veterans Affairs) Army (Department of the Army) USAF (Department of the Air Force)	$2,309,952	0.3%	Rank history: #96 in FY2021, #42 in FY2022, #22 in FY2023 and #39 in FY2025; down 2 since FY2023.
25	Warfeather, LLC Top agencies Army (Department of the Army)	$2,205,541	0.3%	Rank history: not on the FY2021–FY2022 lists, #78 in FY2023 and #27 in FY2025; up 53 since FY2023.
26	Systems Northwest, LLC Top agencies HHS (Department of Health and Human Services)	$2,165,561	0.3%	Rank history: #23 in FY2021, #38 in FY2022, #27 in FY2023 and #84 in FY2025; up 1 since FY2023.
27	Puyenpa Services, LLC Top agencies NRC (Nuclear Regulatory Commission)	$2,018,000	0.3%	Rank history: not on the FY2021 list, #17 in FY2022, #46 in FY2023 and not on the FY2025 list; up 19 since FY2023.
28	Systems Engineering Services Corporation Through Systems Engineering Inc. Top agencies MDA (DOD Missile Defense Agency) USAF (Department of the Air Force)	$1,997,999	0.3%	Rank history: not on the FY2021–FY2023 lists and #30 in FY2025; up 73 since FY2023.
29	Integrated Security Technologies, Inc. 2 awardees Top agencies EOP (Executive Office of the President) Commerce (Department of Commerce) Navy (Department of the Navy)	$1,810,627	0.2%	Rank history: #27 in FY2021, #41 in FY2022, #25 in FY2023 and #26 in FY2025; down 4 since FY2023.
30	Ptsi Managed Services Inc. Top agencies Smithsonian (Smithsonian Institution)	$1,784,564	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
31	Northern Electric Inc Top agencies USAF (Department of the Air Force)	$1,777,272	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
32	Pointer Construction Group LLC Top agencies VA (Department of Veterans Affairs)	$1,688,500	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
33	Chenega Security International, LLC Top agencies Navy (Department of the Navy) DHA (Defense Health Agency)	$1,662,885	0.2%	Rank history: #31 in FY2021, #31 in FY2022, #32 in FY2023 and #29 in FY2025; down 1 since FY2023.
34	Red Peak Technical Services, LLC Top agencies Navy (Department of the Navy)	$1,637,756	0.2%	Rank history: not on the FY2021–FY2023 lists and #15 in FY2025; new.
35	Siemens Aktiengesellschaft Through Siemens Industry Inc. Top agencies VA (Department of Veterans Affairs)	$1,562,381	0.2%	Rank history: #13 in FY2021, #16 in FY2022, #17 in FY2023 and not on the FY2025 list; down 18 since FY2023.
36	Firelake Construction Inc 3 awardees Top agencies Army (Department of the Army)	$1,534,408	0.2%	Rank history: #25 in FY2021, #33 in FY2022, #31 in FY2023 and #18 in FY2025; down 5 since FY2023.
37	Persistent Sentinel LLC Top agencies Army (Department of the Army)	$1,500,000	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
38	Parsons Corporation 2 awardees, including Ptsi Managed Services Inc. and Williams Electric Co Inc. Top agencies Smithsonian (Smithsonian Institution) AOUSC (Administrative Office of the U.S. Courts)	$1,410,883	0.2%	Rank history: not on the FY2021 list, #11 in FY2022, #16 in FY2023 and #19 in FY2025; down 22 since FY2023.
39	Siemens Industry Inc. Top agencies VA (Department of Veterans Affairs) Commerce (Department of Commerce) USDA (Department of Agriculture)	$1,404,822	0.2%	Rank history: not on the FY2021 list, #70 in FY2022, not on the FY2023 list and #21 in FY2025; returned.
40	OSI Systems Inc. 2 awardees, including Rapiscan Systems Inc. and American Science & Engineering Inc. Top agencies AOUSC (Administrative Office of the U.S. Courts) DHS (Department of Homeland Security) DOJ (Department of Justice)	$1,396,588	0.2%	Rank history: #14 in FY2021, #27 in FY2022, #30 in FY2023 and not on the FY2025 list; down 10 since FY2023.
41	Veterans Fire and Life Safety Corporation Top agencies VA (Department of Veterans Affairs) DHS (Department of Homeland Security)	$1,374,098	0.2%	Rank history: not on the FY2021 list, #58 in FY2022, #53 in FY2023 and #22 in FY2025; up 12 since FY2023.
42	M3T Corporation Top agencies USAF (Department of the Air Force) Army (Department of the Army) VA (Department of Veterans Affairs)	$1,258,315	0.2%	Rank history: #68 in FY2021, #69 in FY2022, #57 in FY2023 and #41 in FY2025; up 15 since FY2023.
43	Idemia Identity & Security USA LLC Top agencies DHS (Department of Homeland Security)	$1,219,323	0.2%	Rank history: #52 in FY2021, #37 in FY2022, #35 in FY2023 and not on the FY2025 list; down 8 since FY2023.
44	L3Harris Technologies, Inc. 2 awardees, including L3Harris Maritime Services Inc. Top agencies DOE (Department of Energy) Navy (Department of the Navy)	$1,219,197	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 174 since FY2023.
45	Rock Creek Logistics, Technology, & Management Business Solutions LLC Top agencies Army (Department of the Army)	$1,199,826	0.2%	Rank history: #78 in FY2021, #89 in FY2022, #81 in FY2023 and #46 in FY2025; up 36 since FY2023.
46	Advanced IT Concepts LLC Top agencies Army (Department of the Army)	$1,191,980	0.2%	Rank history: #44 in FY2021, #49 in FY2022, #37 in FY2023 and #56 in FY2025; down 9 since FY2023.
47	Security2000 LLC Top agencies Army (Department of the Army) VA (Department of Veterans Affairs) USAF (Department of the Air Force)	$1,157,028	0.1%	Rank history: #21 in FY2021, #40 in FY2022, #42 in FY2023 and #38 in FY2025; down 5 since FY2023.
48	GMC TEK LLC Top agencies OPM (Office of Personnel Management) VA (Department of Veterans Affairs)	$1,132,971	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
49	Versar Security Systems, LLC Top agencies AOUSC (Administrative Office of the U.S. Courts) DLA (Defense Logistics Agency) GAO (Government Accountability Office)	$1,058,637	0.1%	Rank history: not on the FY2021 list, #45 in FY2022, not on the FY2023 list and not on the FY2025 list; returned.
50	Analogic Corp Top agencies DHS (Department of Homeland Security)	$944,443	0.1%	Rank history: not on the FY2021–FY2023 lists and #75 in FY2025; new.
51	Metro Surveillance Systems, Inc. Top agencies Army (Department of the Army)	$857,335	0.1%	Rank history: not on the FY2021–FY2022 lists, #93 in FY2023 and not on the FY2025 list; up 42 since FY2023.
52	Blue Construction Services LLC Top agencies USAF (Department of the Air Force)	$838,880	0.1%	Rank history: #40 in FY2021, #50 in FY2022, #48 in FY2023 and not on the FY2025 list; down 4 since FY2023.
53	Miami Tribal Systems Integrators, LLC Top agencies DHS (Department of Homeland Security)	$823,875	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
54	Integrity Protection Systems LLC Top agencies VA (Department of Veterans Affairs)	$823,293	0.1%	Rank history: #35 in FY2021, #62 in FY2022, #52 in FY2023 and #45 in FY2025; down 2 since FY2023.
55	F-Concepts, Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$758,547	0.1%	Rank history: #64 in FY2021, #77 in FY2022, not on the FY2023 list and #92 in FY2025; up 48 since FY2023.
56	C4I Engineering Services, LLC Top agencies DLA (Defense Logistics Agency)	$729,673	0.1%	Rank history: not on the FY2021–FY2023 lists and #47 in FY2025; new.
57	Surescan Corporation Top agencies DHS (Department of Homeland Security)	$718,667	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
58	Enviremedial Services, Inc. Top agencies Army (Department of the Army)	$677,326	0.1%	Rank history: not on the FY2021–FY2022 lists, #68 in FY2023 and not on the FY2025 list; up 10 since FY2023.
59	CTG Federal, LLC Top agencies DHS (Department of Homeland Security)	$662,563	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
60	Chief Technical Services LLC Top agencies VA (Department of Veterans Affairs)	$660,588	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
61	Viking Security LLC Top agencies VA (Department of Veterans Affairs)	$584,854	0.1%	Rank history: not on the FY2021–FY2023 lists and #58 in FY2025; new.
62	Secsol Inc. Top agencies VA (Department of Veterans Affairs)	$578,583	0.1%	Rank history: not on the FY2021–FY2023 lists and #82 in FY2025; new.
63	Johnson Controls Building Automation Systems, LLC 2 awardees Top agencies DLA (Defense Logistics Agency) DHA (Defense Health Agency) USAF (Department of the Air Force)	$574,151	0.1%	Rank history: #67 in FY2021, not on the FY2022–FY2023 lists and #24 in FY2025; returned.
64	Communications Resource Inc. Top agencies CSOSA (Court Services and Offender Supervision Agency)	$563,313	0.1%	Rank history: #90 in FY2021, #36 in FY2022, not on the FY2023 list and not on the FY2025 list; up 114 since FY2023.
65	Cahoon & Associates LLC Top agencies VA (Department of Veterans Affairs)	$550,670	0.1%	Rank history: not on the FY2021 list, #60 in FY2022, #97 in FY2023 and not on the FY2025 list; up 32 since FY2023.
66	Muscogee Asset Protection, LLC Top agencies HHS (Department of Health and Human Services)	$542,380	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
67	Rapiscan Systems Inc Top agencies USAF (Department of the Air Force) Treasury (Department of the Treasury) NRC (Nuclear Regulatory Commission)	$538,551	0.1%	Rank history: not on the FY2021–FY2023 lists and #43 in FY2025; new.
68	Cam-Dex Corporation Top agencies HHS (Department of Health and Human Services) USAF (Department of the Air Force) Army (Department of the Army)	$527,022	0.1%	Rank history: #61 in FY2021, not on the FY2022 list, #99 in FY2023 and #67 in FY2025; up 31 since FY2023.
69	Monaco Enterprises, Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$505,323	0.1%	Rank history: not on the FY2021 list, #82 in FY2022, not on the FY2023 list and #48 in FY2025; up 44 since FY2023.
70	Concentric Security LLC Top agencies USAF (Department of the Air Force) DHS (Department of Homeland Security) DOI (Department of the Interior)	$496,605	0.1%	Rank history: not on the FY2021–FY2023 lists and #32 in FY2025; new.
71	Stanley Black & Decker, Inc. 4 awardees, including Securitas Technology Corporation and Securitas Healthcare LLC Top agencies VA (Department of Veterans Affairs) Treasury (Department of the Treasury) DHA (Defense Health Agency)	$491,461	0.1%	Rank history: #50 in FY2021, #78 in FY2022, not on the FY2023 list and not on the FY2025 list; up 113 since FY2023.
72	Adjoiner Corporation Top agencies USAF (Department of the Air Force)	$457,729	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 36 since FY2023.
73	Electronic Specialty Co Top agencies VA (Department of Veterans Affairs)	$439,900	0.1%	Rank history: #59 in FY2021, #71 in FY2022, #92 in FY2023 and #54 in FY2025; up 19 since FY2023.
74	Pass, L.l.c Top agencies VA (Department of Veterans Affairs)	$429,179	0.1%	Rank history: #89 in FY2021, #93 in FY2022, #82 in FY2023 and #65 in FY2025; up 8 since FY2023.
75	Anduril Industries Inc. Top agencies USAF (Department of the Air Force)	$420,000	0.1%	Rank history: not on the FY2021–FY2023 lists and #64 in FY2025; up 70 since FY2023.
76	Star Asset Security LLC Top agencies USAF (Department of the Air Force)	$419,908	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
77	R-Cap Security, LLC Top agencies DHS (Department of Homeland Security)	$419,506	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
78	E.norman Security Systems, Inc. Top agencies VA (Department of Veterans Affairs)	$411,879	0.1%	Rank history: not on the FY2021 list, #97 in FY2022, not on the FY2023 list and #80 in FY2025; up 45 since FY2023.
79	Low Voltage Wiring Ltd Top agencies Army (Department of the Army)	$409,063	0.1%	Rank history: not on the FY2021–FY2023 lists and #71 in FY2025; up 23 since FY2023.
80	C & C Sales Inc. Top agencies VA (Department of Veterans Affairs)	$404,040	0.1%	Rank history: not on the FY2021–FY2023 lists and #76 in FY2025; up 51 since FY2023.
81	Essnova Solutions Inc. Top agencies Navy (Department of the Navy)	$402,505	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
82	Security Integration Group Inc. Top agencies VA (Department of Veterans Affairs)	$387,542	0.1%	Rank history: not on the FY2021 list, #80 in FY2022, #87 in FY2023 and #73 in FY2025; up 5 since FY2023.
83	Itm4G LLC Top agencies USAF (Department of the Air Force) DHS (Department of Homeland Security)	$387,270	0.1%	Rank history: #18 in FY2021, #22 in FY2022, #34 in FY2023 and #70 in FY2025; down 49 since FY2023.
84	Apogee-SSU Joint Venture LLC Top agencies DHS (Department of Homeland Security)	$382,282	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
85	Smartnet, Inc. Top agencies USDA (Department of Agriculture) USAF (Department of the Air Force)	$372,240	<0.1%	Rank history: not on the FY2021–FY2023 lists and #44 in FY2025; new.
86	Red Heritage Media LLC Top agencies DOE (Department of Energy)	$352,587	<0.1%	Rank history: #45 in FY2021, #88 in FY2022, #88 in FY2023 and #69 in FY2025; up 2 since FY2023.
87	Kastle Systems LLC Top agencies CFTC (Commodity Futures Trading Commission) Navy (Department of the Navy) OSC (US Office of Special Counsel)	$335,077	<0.1%	Rank history: #81 in FY2021, #91 in FY2022, #98 in FY2023 and #72 in FY2025; up 11 since FY2023.
88	Minuteman Security Technologies, Inc. Top agencies DFAS (Defense Finance and Accounting Service) VA (Department of Veterans Affairs) DHS (Department of Homeland Security)	$329,659	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 174 since FY2023.
89	Janus Advisory Group LLC Top agencies VA (Department of Veterans Affairs)	$321,633	<0.1%	Rank history: not on the FY2021–FY2023 lists and #68 in FY2025; up 187 since FY2023.
90	Inter-Pacific Inc Top agencies DHS (Department of Homeland Security) USAF (Department of the Air Force) Army (Department of the Army)	$312,843	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 108 since FY2023.
91	Advanced Communication Cabling Inc. Top agencies Army (Department of the Army)	$308,218	<0.1%	Rank history: not on the FY2021–FY2023 lists and #81 in FY2025; up 58 since FY2023.
92	J2 Associates, LLC Top agencies Navy (Department of the Navy) DHA (Defense Health Agency) DLA (Defense Logistics Agency)	$301,635	<0.1%	Rank history: #99 in FY2021, not on the FY2022–FY2023 lists and #60 in FY2025; up 27 since FY2023.
93	Scdatacom LLC Top agencies VA (Department of Veterans Affairs) Army (Department of the Army) Navy (Department of the Navy)	$298,647	<0.1%	Rank history: not on the FY2021–FY2022 lists, #26 in FY2023 and #34 in FY2025; down 67 since FY2023.
94	Nisou Enterprises Inc. Top agencies USAF (Department of the Air Force)	$298,357	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
95	Smiths Group PLC Through Smiths Detection Inc. Top agencies AOUSC (Administrative Office of the U.S. Courts) SEC (Securities and Exchange Commission)	$298,336	<0.1%	Rank history: #15 in FY2021, #21 in FY2022, #13 in FY2023 and not on the FY2025 list; down 82 since FY2023.
96	Heico Aerospace Corporat 2 awardees, including Sensor Technology Engineering LLC and Transformational Security, LLC Top agencies DHS (Department of Homeland Security) DOJ (Department of Justice)	$296,019	<0.1%	Rank history: not on the FY2021 list, #46 in FY2022, #39 in FY2023 and not on the FY2025 list; down 57 since FY2023.
97	Comco, Inc. Top agencies Army (Department of the Army)	$277,128	<0.1%	Rank history: #92 in FY2021, #99 in FY2022, #100 in FY2023 and not on the FY2025 list; up 3 since FY2023.
98	Hurtvet Subcontracting LLC Top agencies VA (Department of Veterans Affairs) DOI (Department of the Interior)	$272,173	<0.1%	Rank history: not on the FY2021–FY2023 lists and #33 in FY2025; new.
99	Fuduric GMBH & Co. KG Top agencies Army (Department of the Army)	$271,892	<0.1%	Rank history: not on the FY2021–FY2023 lists and #91 in FY2025; new.
100	Cherokee Nation Defense Solutions LLC Top agencies Army (Department of the Army)	$271,824	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.

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100 of 533 contractors listed here. See the rest on GovTribe.

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 $772 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 2024 ran Oct 1, 2023 – Sep 30, 2024. 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 FY2023. "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 FY2023 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 J063 contractors in FY2024?

1. Techflow, Inc. ($267M), 2. Leidos Holdings, Inc. ($205M), 3. General Dynamics Corporation ($47.3M), 4. M.c. Dean, Inc. ($33.7M), 5. Science Applications International Corporation ($21.9M), 6. KBR Wyle Services LLC ($13.7M), 7. Sentrillion Corporation ($11.9M), 8. V2X, Inc. ($7.38M), 9. Kbr, Inc. ($7.08M), 10. Omniplex World Services Corp ($6.54M).

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