Top 100 Contractors in NAICS 561: Administrative and Support Services, FY2025

Parent companies by net contract obligations Oct 1, 2024 – Sep 30, 2025 Code page on GovTribe

The top 10 won 49% of FY2025 NAICS 561 contract dollars

Ranking facts

Contract obligations
$55,186,393,525 Net of deobligations, by contracts coded NAICS 561 or a code under it
Contractors
8,016 Parent companies with an obligation
Largest contractor
Honeywell International Inc. $7.8 billion, 13.2% of obligations
Data as of

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV · Free to reuse with credit to GovTribe (CC BY 4.0)

Full ranking

Rank Contractor Net obligations Share Trend
1
Honeywell International Inc. 9 awardees, including National Technology & Engineering Solutions of Sandia, LLC, Honeywell Federal Manufacturing & Technologies, LLC and Vindicator Technologies, Inc.
Top agencies
$7,796,908,979
Rank history: #1 in FY2021, #1 in FY2022, #1 in FY2023 and #1 in FY2024; unchanged since FY2024.
2
Triad National Security LLC
Top agencies
$5,087,344,498
Rank history: #2 in FY2021, #2 in FY2022, #2 in FY2023 and #2 in FY2024; unchanged since FY2024.
3
Ut-Battelle LLC
Top agencies
$2,679,775,141
Rank history: #5 in FY2021, #5 in FY2022, #5 in FY2023 and #4 in FY2024; up 1 since FY2024.
4
Consolidated Nuclear Security, LLC
Top agencies
$2,537,032,429
Rank history: #4 in FY2021, #4 in FY2022, #3 in FY2023 and #3 in FY2024; down 1 since FY2024.
5
Fluor Corporation 5 awardees, including Savannah River Nuclear Solutions LLC, Fluor Intercontinental, Inc. and Fluor Federal Petroleum Operations, LLC
Top agencies
$2,351,264,009
Rank history: #15 in FY2021, #15 in FY2022, #21 in FY2023 and #5 in FY2024; unchanged since FY2024.
6
V2X, Inc. 5 awardees, including V2X Systems LLC, Vertex Modernization and Sustainment LLC and Vectrus Federal Services GMBH
Top agencies
$2,332,235,313
Rank history: not on the FY2021–FY2023 lists and #6 in FY2024; unchanged since FY2024.
7
Pantexas Deterrence, LLC
Top agencies
$1,921,935,329
Rank history: not on the FY2021–FY2024 lists; up 356 since FY2024.
8
Amentum Holdings, Inc. 20 awardees, including Amentum Services, Inc., Amentum Parsons Logistics Services LLC and PAE Government Services, Inc.
Top agencies
$1,814,158,061
Rank history: not on the FY2021–FY2023 lists and #33 in FY2024; up 25 since FY2024.
9
KBR Wyle Services LLC 4 awardees, including KBR Services, LLC
Top agencies
$1,149,492,459
Rank history: not on the FY2021–FY2023 lists and #7 in FY2024; down 2 since FY2024.
10
Maximus Federal Services, Inc.
Top agencies
$1,107,146,305
Rank history: not on the FY2021–FY2023 lists and #13 in FY2024; up 3 since FY2024.
11
Mission Support & Test Services LLC
Top agencies
$994,553,799
Rank history: #10 in FY2021, #9 in FY2022, #10 in FY2023 and #9 in FY2024; down 2 since FY2024.
12
The GEO Group, Inc. 4 awardees, including B.i. Incorporated, GEO Secure Services, LLC and GEO Transport, Inc.
Top agencies
$852,172,357
Rank history: #14 in FY2021, #12 in FY2022, #12 in FY2023 and #11 in FY2024; down 1 since FY2024.
13
Lockheed Martin Corporation 6 awardees
Top agencies
$804,652,167
Rank history: #11 in FY2021, #11 in FY2022, #14 in FY2023 and #12 in FY2024; down 1 since FY2024.
14
CSI Aviation, Inc.
Top agencies
$656,365,226
Rank history: not on the FY2021–FY2022 lists, #44 in FY2023 and #23 in FY2024; up 9 since FY2024.
15
Securitas Critical Infrastructure Services Inc. 2 awardees, including Paragon Systems Inc. and Securitas Electronic Security, Inc.
Top agencies
$599,900,424
Rank history: not on the FY2021–FY2023 lists and #28 in FY2024; up 13 since FY2024.
16
Parsons Corporation 4 awardees, including Xator LLC, Ptsi Managed Services Inc. and Williams Electric Co Inc.
Top agencies
$567,650,561
Rank history: not on the FY2021–FY2023 lists and #10 in FY2024; down 6 since FY2024.
17
Constellis, LLC 9 awardees, including Triple Canopy Inc., Centerra Group, LLC and Centerra Integrated Facilities Services, LLC
Top agencies
$541,154,315
Rank history: not on the FY2021–FY2024 lists; up 395 since FY2024.
18
Nana Regional Corporation, Inc. 18 awardees, including Akima Infrastructure Protection LLC, Akima Global Services, LLC and Akima Global Logistics, LLC
Top agencies
$528,576,869
Rank history: #21 in FY2021, #29 in FY2022, #31 in FY2023 and #44 in FY2024; up 26 since FY2024.
19
Metropolitan Security Services, Inc.
Top agencies
$527,525,607
Rank history: #33 in FY2021, #25 in FY2022, #29 in FY2023 and #17 in FY2024; down 2 since FY2024.
20
The Chenega Corporation 28 awardees, including Chenega Global Protection, LLC, Chenega Naswik International LLC and Chenega Base & Logistics Services LLC
Top agencies
$455,177,578
Rank history: #44 in FY2021, #32 in FY2022, #28 in FY2023 and #87 in FY2024; up 67 since FY2024.
21
Arctic Slope Regional Corporation 12 awardees, including Asrc Federal Field Services, LLC, Asrc Federal Facilities Logistics LLC and Netcentric Technology, LLC
Top agencies
$448,234,566
Rank history: #28 in FY2021, #28 in FY2022, #25 in FY2023 and #25 in FY2024; up 4 since FY2024.
22
Fedex Corp 2 awardees, including Fedex Supply Chain Distribution System, Inc.
Top agencies
$402,769,179
Rank history: #25 in FY2021, #22 in FY2022, #24 in FY2023 and #24 in FY2024; up 2 since FY2024.
23
General Dynamics Corporation 7 awardees, including General Dynamics Information Technology, Inc., General Dynamics OTS (Wilkes Barre), LLC and General Dynamics Land Systems Inc.
Top agencies
$389,255,668
Rank history: #29 in FY2021, #17 in FY2022, #9 in FY2023 and #16 in FY2024; down 7 since FY2024.
24
Leidos Holdings, Inc. 8 awardees, including Leidos, Inc., Hanford Mission Integration Solutions, LLC and Leidos Security Detection & Automation, Inc.
Top agencies
$371,461,200
Rank history: #20 in FY2021, #21 in FY2022, #22 in FY2023 and #21 in FY2024; down 3 since FY2024.
25
Corecivic, Inc.
Top agencies
$315,397,445
Rank history: #31 in FY2021, #26 in FY2022, #38 in FY2023 and #40 in FY2024; up 15 since FY2024.
26
CACI International Inc. 5 awardees, including Caci, Inc. - Federal and Caci, LLC - Commercial
Top agencies
$298,823,424
Rank history: #22 in FY2021, #38 in FY2022, #30 in FY2023 and #31 in FY2024; up 5 since FY2024.
27
Peraton Risk Decision Inc.
Top agencies
$293,181,902
Rank history: not on the FY2021–FY2023 lists and #51 in FY2024; up 24 since FY2024.
28
Peckham Vocational Industries Inc.
Top agencies
$260,707,500
Rank history: #69 in FY2021, #69 in FY2022, #54 in FY2023 and #35 in FY2024; up 7 since FY2024.
29
Bering Straits Native Corporation 13 awardees, including Paragon Professional Services LLC, Bering Straits Professional Services, LLC and Kupono Government Services, LLC
Top agencies
$237,770,659
Rank history: not on the FY2021–FY2024 lists; up 254 since FY2024.
30
Loyalty Support Services
Top agencies
$220,781,102
Rank history: #59 in FY2021, #55 in FY2022, #58 in FY2023 and #57 in FY2024; up 27 since FY2024.
31
Skookum Educational Programs 2 awardees, including Skookum Services, LLC
Top agencies
$208,875,456
Rank history: #40 in FY2021, #33 in FY2022, #36 in FY2023 and #38 in FY2024; up 7 since FY2024.
32
Environmental Chemical Corporation Through ECC International, LLC
Top agencies
$200,052,508
Rank history: not on the FY2021–FY2024 lists; new.
33
Akima Facilities Operations LLC
Top agencies
$195,412,662
Rank history: not on the FY2021–FY2022 lists, #63 in FY2023 and #47 in FY2024; up 14 since FY2024.
34
Professional Contract Services, Inc.
Top agencies
$189,833,031
Rank history: #47 in FY2021, #44 in FY2022, #43 in FY2023 and #43 in FY2024; up 9 since FY2024.
35
BC Partners LLP 4 awardees, including Gardaworld Federal Services LLC, Aegis-Kk Security and Gardaworld North America
Top agencies
$185,572,257
Rank history: not on the FY2021–FY2022 lists, #57 in FY2023 and #41 in FY2024; up 6 since FY2024.
36
J & J Maintenance Inc. 2 awardees, including J&J Germany GMBH
Top agencies
$184,911,611
Rank history: not on the FY2021–FY2023 lists and #50 in FY2024; up 14 since FY2024.
37
Inter-CON Security Systems Inc.
Top agencies
$184,085,997
Rank history: not on the FY2021–FY2023 lists and #49 in FY2024; up 12 since FY2024.
38
Mvm, Inc.
Top agencies
$172,732,300
Rank history: #46 in FY2021, #23 in FY2022, #32 in FY2023 and #36 in FY2024; down 2 since FY2024.
39
Afognak Native Corporation 14 awardees, including "Alutiiq Logistics & Maintenance Services, Llc", J&J and Alms Mission Support Solutions, LLC and Alutiiq Information Management, LLC
Top agencies
$171,724,677
Rank history: #27 in FY2021, #34 in FY2022, #56 in FY2023 and not on the FY2024 list; up 97 since FY2024.
40
Fleetcor Technologies Inc. Through Corporate Lodging Consultants, Inc.
Top agencies
$169,862,897
Rank history: not on the FY2021–FY2024 lists; up 174 since FY2024.
41
Acuity International LLC 3 awardees, including Sallyport Global Holdings Inc. and Acuity - Janus Global, LLC
Top agencies
$168,114,821
Rank history: not on the FY2021–FY2024 lists; new.
42
M.c. Dean, Inc. 3 awardees, including Dean / Fluor, LLC and M.c. Dean Europe GMBH
Top agencies
$160,871,753
Rank history: #60 in FY2021, #50 in FY2022, #55 in FY2023 and #53 in FY2024; up 11 since FY2024.
43
Loyal Source Government Services LLC
Top agencies
$138,791,951
Rank history: #30 in FY2021, #45 in FY2022, #26 in FY2023 and #29 in FY2024; down 14 since FY2024.
44
Nova Space Solutions, LLC
Top agencies
$129,847,904
Rank history: not on the FY2021–FY2024 lists; new.
45
Pond Security Service GMBH
Top agencies
$128,652,490
Rank history: #48 in FY2021, #46 in FY2022, #51 in FY2023 and #55 in FY2024; up 10 since FY2024.
46
Pride Industries
Top agencies
$126,435,519
Rank history: #32 in FY2021, #31 in FY2022, #33 in FY2023 and #37 in FY2024; down 9 since FY2024.
47
Central Council Tlingit and Haida Indian Tribes of Alaska 9 awardees, including T&H Services, LLC, Kira Training Services LLC and Kira Aviation Services LLC
Top agencies
$125,781,766
Rank history: not on the FY2021–FY2024 lists; new.
48
Universal Protection Service, Limited Partnership 2 awardees, including Universal Protection Service, LLC
Top agencies
$125,568,331
Rank history: not on the FY2021–FY2024 lists; up 63 since FY2024.
49
Kerberos International Inc.
Top agencies
$122,000,938
Rank history: not on the FY2021–FY2022 lists, #92 in FY2023 and #56 in FY2024; up 7 since FY2024.
50
CGI Federal Inc.
Top agencies
$120,981,697
Rank history: not on the FY2021–FY2023 lists and #65 in FY2024; up 15 since FY2024.
51
Covenant Aviation Security, LLC
Top agencies
$111,625,246
Rank history: not on the FY2021–FY2024 lists; new.
52
Kbr, Inc. 2 awardees, including KBR Wyle Services, LLC and KBR Diego Garcia, LLC
Top agencies
$108,318,335
Rank history: #3 in FY2021, #3 in FY2022, #75 in FY2023 and #89 in FY2024; up 37 since FY2024.
53
Servicesource Inc. 3 awardees, including Employment Source Inc. and Parc Community Partnership Foundation
Top agencies
$105,461,716
Rank history: #89 in FY2021, #61 in FY2022, #71 in FY2023 and #70 in FY2024; up 17 since FY2024.
54
Serco Inc 2 awardees
Top agencies
$104,669,504
Rank history: not on the FY2021–FY2023 lists and #60 in FY2024; up 6 since FY2024.
55
Cotton Commercial Usa, Inc.
Top agencies
$101,351,626
Rank history: #24 in FY2021, not on the FY2022–FY2023 lists and #61 in FY2024; up 6 since FY2024.
56
Jones Lang Lasalle Americas, Inc.
Top agencies
$98,390,769
Rank history: not on the FY2021–FY2023 lists and #58 in FY2024; up 2 since FY2024.
57
DLH Holdings Corp Through DLH Solutions Inc.
Top agencies
$91,620,401
Rank history: #81 in FY2021, #65 in FY2022, #46 in FY2023 and #46 in FY2024; down 11 since FY2024.
58
Bradley Technologies Inc.
Top agencies
$89,516,529
Rank history: not on the FY2021–FY2023 lists and #86 in FY2024; up 28 since FY2024.
59
G4S Secure Solutions (USA) Inc.
Top agencies
$89,344,003
Rank history: not on the FY2021–FY2024 lists; up 59 since FY2024.
60
CDA Incorporated
Top agencies
$89,124,916
Rank history: not on the FY2021–FY2023 lists and #97 in FY2024; up 37 since FY2024.
61
Melwood Horticultural Training Center, Inc.
Top agencies
$86,406,397
Rank history: #63 in FY2021, #57 in FY2022, #72 in FY2023 and #64 in FY2024; up 3 since FY2024.
62
Emcor Group Inc. 4 awardees, including Emcor Government Services, Inc., Mesa Energy Systems, Inc. and S A Comunale Co Inc.
Top agencies
$85,414,346
Rank history: not on the FY2021–FY2022 lists, #76 in FY2023 and #73 in FY2024; up 11 since FY2024.
63
BAE Systems 3 awardees, including BAE Systems Ordnance Systems Inc. and BAE Systems Technology Solutions & Services Inc.
Top agencies
$82,324,610
Rank history: not on the FY2021–FY2023 lists and #39 in FY2024; down 24 since FY2024.
64
AED Stratecon LLC
Top agencies
$81,685,728
Rank history: not on the FY2021–FY2024 lists; new.
65
Action Facilities Management Inc.
Top agencies
$79,246,148
Rank history: not on the FY2021–FY2022 lists, #83 in FY2023 and #81 in FY2024; up 16 since FY2024.
66
Nve, Inc.
Top agencies
$77,319,103
Rank history: not on the FY2021 list, #76 in FY2022, #84 in FY2023 and not on the FY2024 list; up 53 since FY2024.
67
Vendtech-Sgi LLC
Top agencies
$77,256,082
Rank history: #74 in FY2021, #78 in FY2022, #73 in FY2023 and #75 in FY2024; up 8 since FY2024.
68
Pegasus Support Services LLC
Top agencies
$76,792,548
Rank history: not on the FY2021–FY2023 lists and #78 in FY2024; up 10 since FY2024.
69
Chugach Logistics and Facility Services JV, LLC
Top agencies
$76,048,253
Rank history: not on the FY2021–FY2024 lists; up 55 since FY2024.
70
King & George, LLC 3 awardees, including Invicta Global, LLC and KGN Support Services LLC
Top agencies
$75,110,000
Rank history: #65 in FY2021, #54 in FY2022, #62 in FY2023 and not on the FY2024 list; up 45 since FY2024.
71
Diversified Service Contracting, Inc. 2 awardees, including Dsc-Emi Maintenance Solutions, LLC
Top agencies
$73,458,811
Rank history: not on the FY2021–FY2024 lists; up 282 since FY2024.
72
Koniag, Inc. 7 awardees, including Pacarctic, LLC, Koniag Professional Services, LLC and Koniag Management Solutions LLC
Top agencies
$73,086,226
Rank history: #92 in FY2021, not on the FY2022 list, #80 in FY2023 and not on the FY2024 list; up 139 since FY2024.
73
Fedcap Rehabilitation Services, Inc.
Top agencies
$72,706,565
Rank history: not on the FY2021–FY2022 lists, #81 in FY2023 and #95 in FY2024; up 22 since FY2024.
74
Equifax Inc. 2 awardees, including Equifax Workforce Solutions LLC
Top agencies
$72,050,596
Rank history: not on the FY2021–FY2022 lists, #88 in FY2023 and not on the FY2024 list; returned.
75
Inussuk A / S
Top agencies
$71,577,757
Rank history: not on the FY2021–FY2024 lists; up 130 since FY2024.
76
Kgjj Engineering Solutions, LLC
Top agencies
$71,478,742
Rank history: not on the FY2021–FY2024 lists; up 81 since FY2024.
77
Chugach Government Solutions, LLC 7 awardees, including Defense Base Services, LLC, Chugach Solutions Enterprise, LLC and Chugach Consolidated Solutions, LLC
Top agencies
$71,320,802
Rank history: not on the FY2021–FY2024 lists; up 210 since FY2024.
78
Koa Lani JV LLC
Top agencies
$71,078,627
Rank history: not on the FY2021 list, #60 in FY2022, #70 in FY2023 and #83 in FY2024; up 5 since FY2024.
79
Didlake Inc.
Top agencies
$71,038,357
Rank history: #71 in FY2021, #59 in FY2022, #77 in FY2023 and #76 in FY2024; down 3 since FY2024.
80
Tiya Services L.L.C.
Top agencies
$70,551,971
Rank history: not on the FY2021–FY2023 lists and #80 in FY2024; unchanged since FY2024.
81
Brillient Corporation
Top agencies
$69,658,268
Rank history: #58 in FY2021, not on the FY2022 list, #74 in FY2023 and #85 in FY2024; up 4 since FY2024.
82
South Dade Air Conditioning & Refrigeration Inc.
Top agencies
$65,873,828
Rank history: not on the FY2021–FY2023 lists and #100 in FY2024; up 18 since FY2024.
83
Chimes International, Ltd. Through Chimes District of Columbia Inc.
Top agencies
$65,371,961
Rank history: not on the FY2021–FY2024 lists; up 83 since FY2024.
84
Global Connections To Employment, Inc.
Top agencies
$64,809,709
Rank history: not on the FY2021–FY2023 lists and #98 in FY2024; up 14 since FY2024.
85
Pond & Company Through Pond Constructors Inc.
Top agencies
$62,987,632
Rank history: not on the FY2021–FY2024 lists; new.
86
Nelson Refrigeration Inc.
Top agencies
$62,873,207
Rank history: not on the FY2021–FY2024 lists; up 41 since FY2024.
87
CW Resources, Inc.
Top agencies
$62,834,702
Rank history: not on the FY2021–FY2024 lists; up 51 since FY2024.
88
Continuity Global Solutions LLC 7 awardees, including I3 Pathfinder USA LLC, Torres-Avarn Security LLC and Cgs-Orsa Security LLC
Top agencies
$62,716,201
Rank history: not on the FY2021–FY2024 lists; up 168 since FY2024.
89
Ho-Chunk, Inc. 5 awardees, including HCI Management Services Company, Dynamic-Hhs JV, LLC and Ho-Chunk Shared Services Company
Top agencies
$61,345,221
Rank history: not on the FY2021–FY2024 lists; new.
90
Trace Systems, Inc.
Top agencies
$59,693,216
Rank history: not on the FY2021–FY2024 lists; new.
91
Red River Science & Technology, LLC
Top agencies
$58,623,148
Rank history: not on the FY2021–FY2024 lists; up 67 since FY2024.
92
Four Seasons Environmental Inc.
Top agencies
$57,437,890
Rank history: not on the FY2021–FY2024 lists; up 16 since FY2024.
93
Diversified Protection Corp 2 awardees, including Fiore Industries Inc.
Top agencies
$56,614,921
Rank history: #66 in FY2021, #62 in FY2022, #78 in FY2023 and not on the FY2024 list; up 37 since FY2024.
94
Hospital Housekeeping Systems LLC 2 awardees, including HHS Government Services, LLC
Top agencies
$56,100,228
Rank history: not on the FY2021–FY2024 lists; up 125 since FY2024.
95
The Building People LLC
Top agencies
$55,646,427
Rank history: not on the FY2021–FY2023 lists and #88 in FY2024; down 7 since FY2024.
96
Readiness Management Support LC
Top agencies
$55,415,859
Rank history: not on the FY2021–FY2024 lists; up 18 since FY2024.
97
Cherokee Nation 12 awardees, including Cherokee Nation System Solutions LLC, Cherokee Nation Solutions Link, L.L.C. and Cherokee Nation Armored Solutions, LLC
Top agencies
$54,639,891
Rank history: #18 in FY2021 and not on the FY2022–FY2024 lists; returned.
98
Atkins Nuclear Secured Holdings Corporation Through Isotek Systems, LLC
Top agencies
$54,068,923
Rank history: not on the FY2021–FY2023 lists and #99 in FY2024; up 1 since FY2024.
99
Soos Holding Company LLC 4 awardees, including Yukon Fire Protection Services, Inc., Kcorp Technology Services, Inc. and Kcorp Support Services, Inc.
Top agencies
$53,814,419
Rank history: not on the FY2021–FY2024 lists; up 343 since FY2024.
100
Covenant Services Worldwide LLC Through Covenant Aviation Security, LLC
Top agencies
$53,711,139
Rank history: #50 in FY2021, #49 in FY2022, #48 in FY2023 and #45 in FY2024; down 55 since FY2024.
Show 75 more

100 of 8,016 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 561

Code Net obligations Largest contractor
5612 Facilities Support Services $38,456,980,411 Honeywell International Inc.
5616 Investigation and Security Services $7,642,957,606 Securitas Critical Infrastructure Services Inc.
5617 Services to Buildings and Dwellings $2,515,701,588 AED Stratecon LLC
5614 Business Support Services $2,307,736,682 Maximus Federal Services, Inc.
5619 Other Support Services $1,862,826,227 Lockheed Martin Corporation
5613 Employment Services $915,843,792 Loyal Source Government Services LLC
5615 Travel Arrangement and Reservation Services $829,046,888 CSI Aviation, Inc.
5611 Office Administrative Services $655,300,333 Trace Systems, 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 $59.3 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. An awardee whose own actions mostly name no parent, and that no other company's actions name as their parent, rolls up its SAM.gov registration's chain of parent companies: it counts under the first company there that other companies' actions name as their parent, or under the parent most of a company's own actions name, whichever comes first; with neither, under the highest company in the chain with federal contracts of its own. Joint ventures stay companies of their own. 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 2025 ran Oct 1, 2024 – Sep 30, 2025. 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 FY2024. "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 FY2024 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 561 contractors in FY2025?

1. Honeywell International Inc. ($7.8B), 2. Triad National Security LLC ($5.09B), 3. Ut-Battelle LLC ($2.68B), 4. Consolidated Nuclear Security, LLC ($2.54B), 5. Fluor Corporation ($2.35B), 6. V2X, Inc. ($2.33B), 7. Pantexas Deterrence, LLC ($1.92B), 8. Amentum Holdings, Inc. ($1.81B), 9. KBR Wyle Services LLC ($1.15B), 10. Maximus Federal Services, Inc. ($1.11B).

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