Top 100 Contractors in PSC F0: Natural Resource Conservation Services, Aug 2025–Jul 2026

Name: Top 100 Contractors in PSC F0: Natural Resource Conservation Services, Aug 2025–Jul 2026
Creator: GovTribe
License: https://creativecommons.org/licenses/by/4.0/

Parent companies by net contract obligations Aug 1, 2025 – Jul 31, 2026 Code page on GovTribe

The latest 12 months. See the newest fiscal year's list: Top Contractors in PSC F0: Natural Resource Conservation Services, FY2025.

The top 10 won 23% of PSC F0 contract dollars from August 2025 through July 2026

Contract obligations: $2,822,650,922 Net of deobligations, by contracts coded PSC F0 or a code under it
Contractors: 3,218 Parent companies with an obligation
Largest contractor: Helicopter Express LLC $140 million, 4.7% of obligations
Data as of: Nov 5, 2026

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	Helicopter Express LLC 2 awardees, including Siller Helicopters, LLC Top agencies USDA (Department of Agriculture)	$139,584,881	4.7%	Rank history: #46 in FY2021, #6 in FY2022, #12 in FY2023, #2 in FY2024 and #1 in FY2025; up 1 since Aug 2024–Jul 2025.
2	Helicopter Transport Services, LLC Top agencies USDA (Department of Agriculture)	$113,574,799	3.9%	Rank history: not on the FY2021 list, #1 in FY2022, #10 in FY2023, #14 in FY2024 and #2 in FY2025; down 1 since Aug 2024–Jul 2025.
3	Calista Corp 2 awardees, including Brice Civil Constructors, Inc. and Brice Environmental Services Corporation Top agencies Army (Department of the Army)	$77,826,614	2.6%	Rank history: #43 in FY2021, #73 in FY2022, #76 in FY2023 and not on the FY2024–FY2025 lists; up 210 since Aug 2024–Jul 2025.
4	Aero-Flite, Inc. Top agencies USDA (Department of Agriculture)	$67,940,365	2.3%	Rank history: #26 in FY2021, not on the FY2022 list, #32 in FY2023, #9 in FY2024 and #12 in FY2025; up 8 since Aug 2024–Jul 2025.
5	Neptune Aviation Services, Inc. Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$61,852,321	2.1%	Rank history: #14 in FY2021, #11 in FY2022, #17 in FY2023, #8 in FY2024 and #8 in FY2025; up 6 since Aug 2024–Jul 2025.
6	Aero Air, LLC Top agencies USDA (Department of Agriculture)	$56,011,943	1.9%	Rank history: #41 in FY2021, not on the FY2022 list, #28 in FY2023, #6 in FY2024 and #5 in FY2025; up 3 since Aug 2024–Jul 2025.
7	Coulson Aviation (Usa), Inc. Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$45,459,151	1.5%	Rank history: not on the FY2021 list, #17 in FY2022, #20 in FY2023, #5 in FY2024 and #6 in FY2025; unchanged since Aug 2024–Jul 2025.
8	Billings Flying Service LLC Top agencies USDA (Department of Agriculture)	$37,727,548	1.3%	Rank history: not on the FY2021 list, #4 in FY2022, #5 in FY2023, #11 in FY2024 and #7 in FY2025; down 3 since Aug 2024–Jul 2025.
9	Tenax Aerospace LLC Top agencies USDA (Department of Agriculture)	$35,128,288	1.2%	Rank history: #99 in FY2021, not on the FY2022–FY2024 lists and #10 in FY2025; up 6 since Aug 2024–Jul 2025.
10	Rotak LLC Top agencies USDA (Department of Agriculture)	$33,146,457	1.1%	Rank history: not on the FY2021 list, #63 in FY2022, #18 in FY2023, #13 in FY2024 and #4 in FY2025; down 6 since Aug 2024–Jul 2025.
11	10 Tanker Air Carrier LLC Top agencies USDA (Department of Agriculture)	$31,916,928	1.1%	Rank history: not on the FY2021–FY2023 lists, #4 in FY2024 and #3 in FY2025; down 8 since Aug 2024–Jul 2025.
12	Grayback Forestry Inc. Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$28,153,138	1.0%	Rank history: not on the FY2021–FY2023 lists, #18 in FY2024 and #14 in FY2025; up 5 since Aug 2024–Jul 2025.
13	Dynamic Aviation Group, Inc. Top agencies USDA (Department of Agriculture)	$26,232,493	0.9%	Rank history: #35 in FY2021, #34 in FY2022, #67 in FY2023, #67 in FY2024 and #33 in FY2025; up 44 since Aug 2024–Jul 2025.
14	Capitol Helicopters, Inc. Top agencies USDA (Department of Agriculture)	$25,686,407	0.9%	Rank history: not on the FY2021 list, #48 in FY2022, #45 in FY2023, #26 in FY2024 and #13 in FY2025; up 2 since Aug 2024–Jul 2025.
15	Bighorn Airways Inc. Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$25,249,405	0.9%	Rank history: not on the FY2021 list, #53 in FY2022, #78 in FY2023, #56 in FY2024 and #19 in FY2025; up 5 since Aug 2024–Jul 2025.
16	Patrick Environmental Inc. Top agencies USDA (Department of Agriculture)	$24,265,761	0.8%	Rank history: not on the FY2021 list, #31 in FY2022, #22 in FY2023, #17 in FY2024 and #15 in FY2025; up 2 since Aug 2024–Jul 2025.
17	Orbic Air, LLC Top agencies USDA (Department of Agriculture)	$22,497,790	0.8%	Rank history: not on the FY2021–FY2023 lists, #51 in FY2024 and #44 in FY2025; up 15 since Aug 2024–Jul 2025.
18	Croman Corp Top agencies USDA (Department of Agriculture)	$21,350,555	0.7%	Rank history: not on the FY2021–FY2023 lists, #10 in FY2024 and #11 in FY2025; down 10 since Aug 2024–Jul 2025.
19	Heli-1 Corp Top agencies USDA (Department of Agriculture)	$20,334,361	0.7%	Rank history: not on the FY2021–FY2023 lists, #33 in FY2024 and #25 in FY2025; up 6 since Aug 2024–Jul 2025.
20	Firestorm Wildland Fire Suppression, Inc. Top agencies USDA (Department of Agriculture)	$19,598,986	0.7%	Rank history: not on the FY2021 list, #16 in FY2022, #24 in FY2023, #20 in FY2024 and #18 in FY2025; down 1 since Aug 2024–Jul 2025.
21	Houston's Too LC Top agencies USDA (Department of Agriculture)	$19,306,064	0.7%	Rank history: #7 in FY2021, #70 in FY2022, #70 in FY2023, #59 in FY2024 and #30 in FY2025; up 43 since Aug 2024–Jul 2025.
22	Henrys Aerial Service Inc. Top agencies DOI (Department of the Interior)	$18,984,309	0.6%	Rank history: not on the FY2021–FY2023 lists, #75 in FY2024 and #32 in FY2025; up 16 since Aug 2024–Jul 2025.
23	Trans Aero LLC Top agencies USDA (Department of Agriculture)	$17,593,041	0.6%	Rank history: not on the FY2021 list, #59 in FY2022, #59 in FY2023, #35 in FY2024 and #47 in FY2025; up 14 since Aug 2024–Jul 2025.
24	Aero Spray Inc. Top agencies DOI (Department of the Interior)	$17,189,267	0.6%	Rank history: #10 in FY2021, not on the FY2022–FY2023 lists, #34 in FY2024 and #45 in FY2025; up 12 since Aug 2024–Jul 2025.
25	Brink Brothers Inc. Top agencies USDA (Department of Agriculture)	$16,778,560	0.6%	Rank history: not on the FY2021–FY2022 lists, #29 in FY2023, #7 in FY2024 and #22 in FY2025; down 15 since Aug 2024–Jul 2025.
26	State of Oregon Department of Fish and Wildlife Top agencies Army (Department of the Army)	$16,678,001	0.6%	Rank history: not on the FY2021–FY2023 lists, #45 in FY2024 and #53 in FY2025; up 28 since Aug 2024–Jul 2025.
27	Western Pilot Service Inc. Top agencies DOI (Department of the Interior) USDA (Department of Agriculture)	$16,656,703	0.6%	Rank history: not on the FY2021–FY2023 lists, #24 in FY2024 and #21 in FY2025; down 4 since Aug 2024–Jul 2025.
28	Miller Timber Services, Inc. Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$16,413,980	0.6%	Rank history: #47 in FY2021, #23 in FY2022, #48 in FY2023, #50 in FY2024 and #24 in FY2025; unchanged since Aug 2024–Jul 2025.
29	Precision, LLC Top agencies USDA (Department of Agriculture)	$16,299,027	0.6%	Rank history: not on the FY2021 list, #37 in FY2022, #80 in FY2023, #12 in FY2024 and #9 in FY2025; down 15 since Aug 2024–Jul 2025.
30	Pacific OASIS Inc Top agencies USDA (Department of Agriculture)	$14,113,141	0.5%	Rank history: not on the FY2021–FY2022 lists, #34 in FY2023, #21 in FY2024 and #23 in FY2025; down 8 since Aug 2024–Jul 2025.
31	Thunder MTN Catering Inc. Top agencies USDA (Department of Agriculture)	$14,070,144	0.5%	Rank history: #15 in FY2021, #18 in FY2022, #69 in FY2023, #47 in FY2024 and #27 in FY2025; down 2 since Aug 2024–Jul 2025.
32	Construction Helicopters, LLC Through Helimax Aviation LLC Top agencies USDA (Department of Agriculture)	$14,069,140	0.5%	Rank history: not on the FY2021 list, #9 in FY2022, #11 in FY2023, not on the FY2024 list and #16 in FY2025; up 462 since Aug 2024–Jul 2025.
33	Bluesky Helicopters Inc. Top agencies USDA (Department of Agriculture)	$13,382,593	0.5%	Rank history: not on the FY2021 list, #39 in FY2022, #39 in FY2023, #43 in FY2024 and #35 in FY2025; up 14 since Aug 2024–Jul 2025.
34	Big Sky Mobile Catering Corporation Top agencies USDA (Department of Agriculture)	$13,306,379	0.5%	Rank history: #8 in FY2021, #38 in FY2022, #54 in FY2023, #42 in FY2024 and #26 in FY2025; unchanged since Aug 2024–Jul 2025.
35	Kit Helicopter Operations LLC Top agencies USDA (Department of Agriculture)	$13,293,003	0.5%	Rank history: not on the FY2021–FY2022 lists, #98 in FY2023, #88 in FY2024 and #42 in FY2025; up 11 since Aug 2024–Jul 2025.
36	CPM Development Corporation Top agencies USDA (Department of Agriculture)	$13,252,775	0.4%	Rank history: not on the FY2021–FY2024 lists and #17 in FY2025; up 12 since Aug 2024–Jul 2025.
37	Spur Aviation Services, LC Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$13,195,898	0.4%	Rank history: not on the FY2021 list, #55 in FY2022, #64 in FY2023, #23 in FY2024 and #28 in FY2025; down 11 since Aug 2024–Jul 2025.
38	Blue Mountain Fire Suppression Incorporated Top agencies USDA (Department of Agriculture)	$13,166,973	0.4%	Rank history: not on the FY2021–FY2024 lists and #46 in FY2025; up 188 since Aug 2024–Jul 2025.
39	GFP Enterprises, LLC 4 awardees, including GFP Mobile Food Services, LLC, For Stars Express, Inc. and Stewart's Firefighter Food Catering, Inc. Top agencies USDA (Department of Agriculture)	$12,883,937	0.4%	Rank history: not on the FY2021–FY2024 lists and #38 in FY2025; up 143 since Aug 2024–Jul 2025.
40	Fletcher Flying Service Inc Top agencies DOI (Department of the Interior)	$12,830,273	0.4%	Rank history: not on the FY2021–FY2024 lists and #48 in FY2025; up 4 since Aug 2024–Jul 2025.
41	West Coast Reforestation Inc. Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$12,808,176	0.4%	Rank history: not on the FY2021 list, #83 in FY2022, not on the FY2023 list, #54 in FY2024 and #34 in FY2025; down 6 since Aug 2024–Jul 2025.
42	Ponderosa Aviation Inc. 2 awardees, including Clearwater Airco, LLC Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$12,074,870	0.4%	Rank history: not on the FY2021 list, #42 in FY2022, #46 in FY2023, #27 in FY2024 and #55 in FY2025; up 11 since Aug 2024–Jul 2025.
43	Brainerd Helicopters, Inc. Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$11,593,416	0.4%	Rank history: not on the FY2021 list, #33 in FY2022, #43 in FY2023, #40 in FY2024 and #58 in FY2025; up 13 since Aug 2024–Jul 2025.
44	Co Fire Aviation, Inc. Top agencies DOI (Department of the Interior)	$11,483,690	0.4%	Rank history: not on the FY2021–FY2023 lists, #38 in FY2024 and #20 in FY2025; down 23 since Aug 2024–Jul 2025.
45	Bode Aviation, Inc. Top agencies USDA (Department of Agriculture)	$11,232,965	0.4%	Rank history: not on the FY2021–FY2023 lists, #91 in FY2024 and #68 in FY2025; up 41 since Aug 2024–Jul 2025.
46	P.j. Helicopters, Inc. Top agencies USDA (Department of Agriculture)	$11,113,896	0.4%	Rank history: not on the FY2021–FY2023 lists, #22 in FY2024 and #50 in FY2025; down 22 since Aug 2024–Jul 2025.
47	Imperial Forestry, Incorporated Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$10,923,045	0.4%	Rank history: #17 in FY2021, #20 in FY2022, #15 in FY2023, #25 in FY2024 and #40 in FY2025; down 7 since Aug 2024–Jul 2025.
48	Alta Pacific Fire Fighting, LLC Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$10,877,154	0.4%	Rank history: not on the FY2021–FY2022 lists, #93 in FY2023, #57 in FY2024 and #49 in FY2025; down 5 since Aug 2024–Jul 2025.
49	Alpine Services LLC Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$10,685,126	0.4%	Rank history: not on the FY2021–FY2022 lists, #90 in FY2023, #66 in FY2024 and #29 in FY2025; down 7 since Aug 2024–Jul 2025.
50	Hillsboro Aviation Inc. Top agencies USDA (Department of Agriculture)	$10,197,100	0.3%	Rank history: not on the FY2021–FY2023 lists, #39 in FY2024 and #37 in FY2025; unchanged since Aug 2024–Jul 2025.
51	Heliqwest International Inc. Top agencies USDA (Department of Agriculture)	$10,129,352	0.3%	Rank history: #69 in FY2021, #25 in FY2022, not on the FY2023 list, #55 in FY2024 and #54 in FY2025; up 1 since Aug 2024–Jul 2025.
52	R & G Food Services Inc. Top agencies USDA (Department of Agriculture)	$9,778,110	0.3%	Rank history: #11 in FY2021, #29 in FY2022, not on the FY2023–FY2024 lists and #81 in FY2025; up 309 since Aug 2024–Jul 2025.
53	G E Forestry, Inc. Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$9,715,085	0.3%	Rank history: #20 in FY2021, #19 in FY2022, #25 in FY2023, #30 in FY2024 and not on the FY2025 list; up 68 since Aug 2024–Jul 2025.
54	North Pacific Forestry Inc. Top agencies USDA (Department of Agriculture)	$9,702,481	0.3%	Rank history: not on the FY2021–FY2022 lists, #58 in FY2023, #28 in FY2024 and #51 in FY2025; down 23 since Aug 2024–Jul 2025.
55	Boedeker Flying Service, Inc. Top agencies DOI (Department of the Interior)	$9,644,065	0.3%	Rank history: not on the FY2021–FY2024 lists and #73 in FY2025; up 44 since Aug 2024–Jul 2025.
56	New South Associates, Inc. Top agencies USDA (Department of Agriculture)	$9,462,232	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
57	Central Copters, Inc. Top agencies USDA (Department of Agriculture)	$9,449,270	0.3%	Rank history: not on the FY2021 list, #57 in FY2022, #79 in FY2023, #73 in FY2024 and #56 in FY2025; up 1 since Aug 2024–Jul 2025.
58	Timberline Helicopters Inc. Top agencies USDA (Department of Agriculture)	$8,994,593	0.3%	Rank history: not on the FY2021 list, #40 in FY2022, #68 in FY2023, #41 in FY2024 and #52 in FY2025; down 7 since Aug 2024–Jul 2025.
59	Torres Contracting, Inc. Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$8,894,119	0.3%	Rank history: not on the FY2021 list, #81 in FY2022, not on the FY2023 list, #52 in FY2024 and #57 in FY2025; down 10 since Aug 2024–Jul 2025.
60	Skydance Helicopters of Northern Nevada Top agencies USDA (Department of Agriculture)	$8,829,000	0.3%	Rank history: not on the FY2021–FY2022 lists, #89 in FY2023 and not on the FY2024–FY2025 lists; up 86 since Aug 2024–Jul 2025.
61	Marstel-Day, LLC Top agencies Navy (Department of the Navy)	$8,824,742	0.3%	Rank history: not on the FY2021–FY2024 lists and #79 in FY2025; up 222 since Aug 2024–Jul 2025.
62	C.c. Calzone, LLC Top agencies USDA (Department of Agriculture)	$8,824,416	0.3%	Rank history: not on the FY2021–FY2023 lists, #63 in FY2024 and #36 in FY2025; down 29 since Aug 2024–Jul 2025.
63	Franco Reforestation Inc. Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$8,798,568	0.3%	Rank history: #44 in FY2021, #52 in FY2022, #41 in FY2023, #90 in FY2024 and #67 in FY2025; up 18 since Aug 2024–Jul 2025.
64	G B Aerial Applications Inc. Top agencies DOI (Department of the Interior)	$8,619,496	0.3%	Rank history: not on the FY2021–FY2024 lists and #100 in FY2025; up 113 since Aug 2024–Jul 2025.
65	Mountain Blade Runner LLC Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$8,568,204	0.3%	Rank history: not on the FY2021–FY2023 lists, #72 in FY2024 and #66 in FY2025; up 1 since Aug 2024–Jul 2025.
66	Air Resources Helicopters, Inc. Top agencies USDA (Department of Agriculture)	$8,493,561	0.3%	Rank history: not on the FY2021–FY2023 lists, #44 in FY2024 and #31 in FY2025; down 39 since Aug 2024–Jul 2025.
67	A.i.s., Inc. Top agencies Commerce (Department of Commerce)	$8,132,613	0.3%	Rank history: #30 in FY2021, #47 in FY2022, #71 in FY2023, #29 in FY2024 and #39 in FY2025; down 26 since Aug 2024–Jul 2025.
68	Mother Lode Firecamp Services Inc. Top agencies USDA (Department of Agriculture)	$7,932,437	0.3%	Rank history: not on the FY2021–FY2024 lists and #99 in FY2025; up 335 since Aug 2024–Jul 2025.
69	Summitt Forests, Inc. Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$7,912,502	0.3%	Rank history: #23 in FY2021, #15 in FY2022, #6 in FY2023, #46 in FY2024 and #60 in FY2025; down 4 since Aug 2024–Jul 2025.
70	RJT Contracting Inc. Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$7,895,790	0.3%	Rank history: not on the FY2021–FY2024 lists and #65 in FY2025; up 3 since Aug 2024–Jul 2025.
71	New Frontier Aviation, LLC Top agencies DOI (Department of the Interior)	$7,656,829	0.3%	Rank history: not on the FY2021–FY2023 lists, #48 in FY2024 and #41 in FY2025; down 26 since Aug 2024–Jul 2025.
72	Mountain West Helicopters, LLC Top agencies USDA (Department of Agriculture)	$7,599,139	0.3%	Rank history: not on the FY2021–FY2023 lists, #99 in FY2024 and #70 in FY2025; down 17 since Aug 2024–Jul 2025.
73	P.r. Reforestation, Inc. Top agencies USDA (Department of Agriculture)	$7,242,230	0.2%	Rank history: not on the FY2021–FY2023 lists, #70 in FY2024 and #59 in FY2025; down 12 since Aug 2024–Jul 2025.
74	Idaho Helicopters Inc. Top agencies USDA (Department of Agriculture)	$6,963,731	0.2%	Rank history: not on the FY2021 list, #78 in FY2022, #91 in FY2023, #76 in FY2024 and #76 in FY2025; up 37 since Aug 2024–Jul 2025.
75	Aerial Timber Applicators Inc. Top agencies DOI (Department of the Interior)	$6,954,787	0.2%	Rank history: not on the FY2021–FY2023 lists, #69 in FY2024 and #91 in FY2025; up 1 since Aug 2024–Jul 2025.
76	Columbia Helicopters, Inc. Top agencies USDA (Department of Agriculture)	$6,874,062	0.2%	Rank history: not on the FY2021 list, #10 in FY2022, not on the FY2023 list, #84 in FY2024 and not on the FY2025 list; up 42 since Aug 2024–Jul 2025.
77	J3 Contracting, Inc. Top agencies USDA (Department of Agriculture)	$6,821,857	0.2%	Rank history: #48 in FY2021, #62 in FY2022, not on the FY2023 list, #60 in FY2024 and #85 in FY2025; down 2 since Aug 2024–Jul 2025.
78	Hold the Line Catering, LLC Top agencies USDA (Department of Agriculture)	$6,713,502	0.2%	Rank history: not on the FY2021–FY2025 lists; up 143 since Aug 2024–Jul 2025.
79	D.h. Helicopter, Inc. Top agencies USDA (Department of Agriculture)	$6,628,732	0.2%	Rank history: not on the FY2021–FY2025 lists; up 18 since Aug 2024–Jul 2025.
80	Houstons Trail's End, Inc. Top agencies USDA (Department of Agriculture)	$6,529,937	0.2%	Rank history: not on the FY2021–FY2025 lists; up 33 since Aug 2024–Jul 2025.
81	R & R Contracting Inc. Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$6,520,953	0.2%	Rank history: not on the FY2021–FY2022 lists, #100 in FY2023, #100 in FY2024 and #62 in FY2025; down 11 since Aug 2024–Jul 2025.
82	Columbia Basin Helicopter, Inc. Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$6,509,023	0.2%	Rank history: not on the FY2021 list, #87 in FY2022, #85 in FY2023, not on the FY2024 list and #43 in FY2025; down 20 since Aug 2024–Jul 2025.
83	Sprout Forestry Incorporated Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$6,431,818	0.2%	Rank history: not on the FY2021 list, #94 in FY2022, #73 in FY2023, #87 in FY2024 and #78 in FY2025; down 9 since Aug 2024–Jul 2025.
84	Storm Services Engineering LLC Top agencies USDA (Department of Agriculture)	$6,314,635	0.2%	Rank history: not on the FY2021–FY2024 lists and #80 in FY2025; up 1 since Aug 2024–Jul 2025.
85	Outback Firefighting, Inc. Top agencies USDA (Department of Agriculture)	$6,220,976	0.2%	Rank history: #62 in FY2021, #80 in FY2022 and not on the FY2023–FY2025 lists; up 27 since Aug 2024–Jul 2025.
86	Axsus Enterprises LLC Top agencies USDA (Department of Agriculture)	$6,156,496	0.2%	Rank history: #78 in FY2021 and not on the FY2022–FY2025 lists; up 82 since Aug 2024–Jul 2025.
87	Pacific States Marine Fisheries Commission Top agencies Commerce (Department of Commerce) DOI (Department of the Interior)	$6,121,125	0.2%	Rank history: not on the FY2021 list, #71 in FY2022, not on the FY2023 list, #83 in FY2024 and #75 in FY2025; down 3 since Aug 2024–Jul 2025.
88	Pacific Ridgeline Forestry LLC Top agencies USDA (Department of Agriculture)	$5,991,679	0.2%	Rank history: not on the FY2021–FY2024 lists and #86 in FY2025; up 49 since Aug 2024–Jul 2025.
89	Hdr, Inc. Through HDR Environmental, Operations and Construction, Inc. Top agencies Navy (Department of the Navy)	$5,913,403	0.2%	Rank history: #39 in FY2021, #92 in FY2022 and not on the FY2023–FY2025 lists; up 60 since Aug 2024–Jul 2025.
90	AFS Forestry LLC Top agencies USDA (Department of Agriculture)	$5,890,344	0.2%	Rank history: not on the FY2021–FY2024 lists and #69 in FY2025; up 1 since Aug 2024–Jul 2025.
91	Minuteman Aviation Inc. Top agencies USDA (Department of Agriculture)	$5,865,386	0.2%	Rank history: not on the FY2021 list, #50 in FY2022, #82 in FY2023, #81 in FY2024 and #63 in FY2025; down 11 since Aug 2024–Jul 2025.
92	Anchor Point Fuels & Services, LLC Top agencies USDA (Department of Agriculture)	$5,797,223	0.2%	Rank history: not on the FY2021–FY2024 lists and #87 in FY2025; up 96 since Aug 2024–Jul 2025.
93	BHI Productions LLC Top agencies USDA (Department of Agriculture)	$5,779,329	0.2%	Rank history: not on the FY2021–FY2025 lists; up 272 since Aug 2024–Jul 2025.
94	Scofield Catering & Management Inc Top agencies USDA (Department of Agriculture)	$5,775,778	0.2%	Rank history: not on the FY2021–FY2024 lists and #64 in FY2025; down 17 since Aug 2024–Jul 2025.
95	Neiman Timber Company, L.C. Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$5,752,036	0.2%	Rank history: not on the FY2021–FY2024 lists and #84 in FY2025; up 142 since Aug 2024–Jul 2025.
96	Helistream Inc. Top agencies USDA (Department of Agriculture)	$5,640,511	0.2%	Rank history: not on the FY2021–FY2025 lists; up 35 since Aug 2024–Jul 2025.
97	Diamond Road Maintenance, Inc. Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$5,387,843	0.2%	Rank history: not on the FY2021–FY2024 lists and #90 in FY2025; down 2 since Aug 2024–Jul 2025.
98	Gold Aero Inc. Top agencies USDA (Department of Agriculture)	$5,356,903	0.2%	Rank history: not on the FY2021–FY2022 lists, #86 in FY2023, not on the FY2024 list and #71 in FY2025; down 30 since Aug 2024–Jul 2025.
99	Evergreen Flying Service Inc. Top agencies DOI (Department of the Interior)	$5,352,941	0.2%	Rank history: not on the FY2021–FY2023 lists, #78 in FY2024 and #88 in FY2025; up 7 since Aug 2024–Jul 2025.
100	A.s.i. Arden Solutions Inc. Top agencies USDA (Department of Agriculture)	$5,093,310	0.2%	Rank history: not on the FY2021–FY2025 lists; up 17 since Aug 2024–Jul 2025.

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100 of 3,218 contractors listed here. See the rest on GovTribe.

Rankings for the codes under PSC F0

Code	Net obligations	Largest contractor
F003 Forest/Range Fire Suppression/Presuppression Services	$2,223,234,044	Helicopter Express LLC
F099 Other Natural Resources and Conservation Services	$193,021,372	Brink Brothers Inc.
F006 Land Treatment Practices Services (plowing/clearing, etc.)	$102,540,215	Calista Corp
F014 Tree Thinning Services	$67,388,523	G E Forestry, Inc.
F018 Other Range/Forest Improvements Services (non-construction)	$47,102,387	Neiman Timber Company, L.C.
F016 Wildhorse/Burro Control Services	$43,861,458	Vestring Ranch
F020 Fisheries Resources Management Services	$40,871,201	A.i.s., Inc.
F005 Forest Tree Planting Services	$17,724,954	LG Forestry, LLC
F019 Other Wildlife Management Services	$11,145,421	The Blackledge Group, Inc.
F001 Aerial Fertilization/Spraying Services	$10,700,776	Dynamic Aviation Group, Inc.
F009 Seed Collection/Production Services	$8,027,948	Benson Farms Inc.
F008 Recreation Site Maintenance Services (non-construction)	$2,656,996	Quick Enterprise, LLC
F021 Site Preparation	$2,150,834	South Fork Forest Solutions, 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 $2.95 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.
Period: the trailing 12 months end with the last month that ended at least 90 days ago, because the Department of Defense reports its contract actions to FPDS about 90 days late. The list is rebuilt each night.
Rank changes compare with Aug 2024–Jul 2025. "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.
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 F0 contractors in Aug 2025–Jul 2026?

1. Helicopter Express LLC ($140M), 2. Helicopter Transport Services, LLC ($114M), 3. Calista Corp ($77.8M), 4. Aero-Flite, Inc. ($67.9M), 5. Neptune Aviation Services, Inc. ($61.9M), 6. Aero Air, LLC ($56M), 7. Coulson Aviation (Usa), Inc. ($45.5M), 8. Billings Flying Service LLC ($37.7M), 9. Tenax Aerospace LLC ($35.1M), 10. Rotak LLC ($33.1M).

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