Top 100 Contractors in PSC AS: Transportation R&D Services, FY2022

Name: Top 100 Contractors in PSC AS: Transportation R&D Services, FY2022
Creator: GovTribe

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

The top 10 won 57% of FY2022 PSC AS contract dollars

Contract obligations: $275,375,036 Net of deobligations, by contracts coded PSC AS or a code under it
Contractors: 162 Parent companies with an obligation
Largest contractor: General Electric Company $29.5 million, 10.0% 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	General Electric Company Top agencies NASA (National Aeronautics and Space Administration)	$29,524,818	10.0%	Rank history: #1 in FY2021, #1 in FY2023, #1 in FY2024 and #1 in FY2025; unchanged since FY2021.
2	Lockheed Martin Corporation Through Lockheed Martin Services, LLC Top agencies DOT (Department of Transportation)	$27,367,222	9.3%	Rank history: #2 in FY2021, #5 in FY2023, #13 in FY2024 and #3 in FY2025; unchanged since FY2021.
3	Magnix USA Inc. Top agencies NASA (National Aeronautics and Space Administration)	$19,613,080	6.7%	Rank history: #7 in FY2021, #3 in FY2023, #5 in FY2024 and not on the FY2025 list; up 4 since FY2021.
4	Leidos Holdings, Inc. 2 awardees, including Leidos, Inc. Top agencies DOT (Department of Transportation)	$18,373,179	6.2%	Rank history: #5 in FY2021, #8 in FY2023, #4 in FY2024 and #5 in FY2025; up 1 since FY2021.
5	Pacific Layberthing South, LLC Top agencies DOT (Department of Transportation)	$16,025,760	5.4%	Rank history: not on the FY2021 list, #12 in FY2023, #10 in FY2024 and #8 in FY2025; new.
6	Noblis, Inc. Top agencies DOT (Department of Transportation)	$14,961,849	5.1%	Rank history: #45 in FY2021, #6 in FY2023, #3 in FY2024 and #4 in FY2025; up 39 since FY2021.
7	RTX Corporation 3 awardees, including Raytheon Company Top agencies DOT (Department of Transportation) NASA (National Aeronautics and Space Administration)	$14,674,732	5.0%	Rank history: #12 in FY2021, #2 in FY2023, #2 in FY2024 and #2 in FY2025; up 5 since FY2021.
8	Hermeus Corp Top agencies USAF (Department of the Air Force)	$11,575,000	3.9%	Rank history: #4 in FY2021 and not on the FY2023–FY2025 lists; down 4 since FY2021.
9	Dunlap and Associates, Inc. Top agencies DOT (Department of Transportation)	$7,703,554	2.6%	Rank history: not on the FY2021 list, not on the FY2023 list, #19 in FY2024 and not on the FY2025 list; new.
10	US Ecology, Inc. Through Boom Technology, Inc. Top agencies USAF (Department of the Air Force)	$7,000,000	2.4%	Rank history: not on the FY2021 list, #11 in FY2023 and not on the FY2024–FY2025 lists; new.
11	Transportation Research Center Inc. Top agencies DOT (Department of Transportation)	$6,897,448	2.3%	Rank history: #6 in FY2021, #7 in FY2023, not on the FY2024 list and #24 in FY2025; down 5 since FY2021.
12	Ensco Inc. Top agencies DOT (Department of Transportation) DHS (Department of Homeland Security)	$6,693,880	2.3%	Rank history: #20 in FY2021, #4 in FY2023, #6 in FY2024 and #6 in FY2025; up 8 since FY2021.
13	Virginia Polytechnic Institute & State University 2 awardees Top agencies DOT (Department of Transportation)	$6,687,557	2.3%	Rank history: not on the FY2021 list, not on the FY2023 list, #30 in FY2024 and #62 in FY2025; new.
14	Battelle Memorial Institute Top agencies DOT (Department of Transportation)	$5,244,670	1.8%	Rank history: #44 in FY2021, #17 in FY2023, #15 in FY2024 and #21 in FY2025; up 30 since FY2021.
15	Regents of the University of Michigan Top agencies DOT (Department of Transportation)	$4,966,748	1.7%	Rank history: not on the FY2021 list, #28 in FY2023, #50 in FY2024 and #43 in FY2025; new.
16	Genex Systems, LLC Top agencies DOT (Department of Transportation)	$4,613,938	1.6%	Rank history: #31 in FY2021, #9 in FY2023, #9 in FY2024 and #7 in FY2025; up 15 since FY2021.
17	The Texas A&M University System Through Texas A&M Transportation Institute Top agencies DOT (Department of Transportation)	$4,580,718	1.6%	Rank history: not on the FY2021 list, #37 in FY2023 and not on the FY2024–FY2025 lists; up 118 since FY2021.
18	ICF International, Inc. Through ICF Incorporated, L.L.C. Top agencies DOT (Department of Transportation)	$4,379,657	1.5%	Rank history: #16 in FY2021, #14 in FY2023, #29 in FY2024 and not on the FY2025 list; down 2 since FY2021.
19	Toyota Industries Corporation Through Vanderlande Industries Inc. Top agencies DHS (Department of Homeland Security)	$4,058,020	1.4%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
20	Honeywell International Inc. Top agencies DOT (Department of Transportation)	$2,914,819	1.0%	Rank history: not on the FY2021 list, not on the FY2023 list, #99 in FY2024 and not on the FY2025 list; new.
21	Highway Technology Partners LLC Top agencies DOT (Department of Transportation)	$2,617,182	0.9%	Rank history: #10 in FY2021, #19 in FY2023, #33 in FY2024 and #74 in FY2025; down 11 since FY2021.
22	Booz Allen Hamilton Holding Corporation Through Booz Allen Hamilton Inc. Top agencies DOT (Department of Transportation)	$2,275,190	0.8%	Rank history: not on the FY2021 list, #35 in FY2023, #21 in FY2024 and #15 in FY2025; new.
23	Micro-X Inc. Top agencies DHS (Department of Homeland Security)	$1,616,104	0.5%	Rank history: #13 in FY2021, #16 in FY2023, #62 in FY2024 and #10 in FY2025; down 10 since FY2021.
24	Vanasse Hangen Brustlin, Inc. Top agencies DOT (Department of Transportation)	$1,546,860	0.5%	Rank history: #74 in FY2021, #29 in FY2023, #14 in FY2024 and #16 in FY2025; up 50 since FY2021.
25	Iveco SUD-West Nutzfahrzeuge GMBH Through Ati, Inc. Top agencies DOT (Department of Transportation)	$1,523,582	0.5%	Rank history: not on the FY2021 list, #20 in FY2023 and not on the FY2024–FY2025 lists; new.
26	T. White Parker Associates, Incorporated Top agencies DOT (Department of Transportation)	$1,498,279	0.5%	Rank history: #23 in FY2021, #79 in FY2023 and not on the FY2024–FY2025 lists; down 3 since FY2021.
27	Sharma & Associates Inc. Top agencies DOT (Department of Transportation)	$1,470,704	0.5%	Rank history: #11 in FY2021, #27 in FY2023 and not on the FY2024–FY2025 lists; down 16 since FY2021.
28	Design Interactive, LLC Top agencies DOT (Department of Transportation)	$1,448,902	0.5%	Rank history: #86 in FY2021, not on the FY2023–FY2024 lists and #18 in FY2025; up 58 since FY2021.
29	Applied Pavement Technology, Inc. Top agencies DOT (Department of Transportation)	$1,442,796	0.5%	Rank history: not on the FY2021 list, #45 in FY2023, #32 in FY2024 and not on the FY2025 list; new.
30	George Mason University Top agencies DOT (Department of Transportation)	$1,418,523	0.5%	Rank history: #14 in FY2021, #21 in FY2023 and not on the FY2024–FY2025 lists; down 16 since FY2021.
31	Voxel Radar GMBH Top agencies DHS (Department of Homeland Security)	$1,160,923	0.4%	Rank history: #78 in FY2021, not on the FY2023 list, #77 in FY2024 and #57 in FY2025; up 47 since FY2021.
32	Dynamic Research Inc. Top agencies DOT (Department of Transportation)	$1,053,474	0.4%	Rank history: not on the FY2021 list, #15 in FY2023 and not on the FY2024–FY2025 lists; new.
33	WSP USA Solutions Inc. Top agencies DOT (Department of Transportation)	$1,007,091	0.3%	Rank history: not on the FY2021 list, #31 in FY2023 and not on the FY2024–FY2025 lists; new.
34	Photonwares Corp Through Optowares Inc. Top agencies DOT (Department of Transportation)	$999,915	0.3%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 86 since FY2021.
35	Pulsar Informatics, Inc. Top agencies DOT (Department of Transportation)	$999,876	0.3%	Rank history: not on the FY2021 list, not on the FY2023–FY2024 lists and #38 in FY2025; up 75 since FY2021.
36	Callentis Consulting Group LLC Top agencies DOT (Department of Transportation)	$999,832	0.3%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 83 since FY2021.
37	Energy Storage Safety Products International LLC Top agencies DOT (Department of Transportation)	$988,422	0.3%	Rank history: not on the FY2021 list, not on the FY2023–FY2024 lists and #41 in FY2025; up 89 since FY2021.
38	University of Illinois Top agencies DOT (Department of Transportation) Army (Department of the Army)	$978,914	0.3%	Rank history: #21 in FY2021, #69 in FY2023, #61 in FY2024 and not on the FY2025 list; down 17 since FY2021.
39	Merlin Labs Inc. Top agencies DOT (Department of Transportation)	$969,000	0.3%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
40	Creare LLC Top agencies DOT (Department of Transportation)	$961,090	0.3%	Rank history: #26 in FY2021, not on the FY2023 list, #45 in FY2024 and #90 in FY2025; down 14 since FY2021.
41	Anzen Unmanned, LLC Top agencies DOT (Department of Transportation)	$952,779	0.3%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
42	Westat, Inc. Top agencies DOT (Department of Transportation)	$949,774	0.3%	Rank history: #48 in FY2021, #22 in FY2023 and not on the FY2024–FY2025 lists; up 6 since FY2021.
43	Unifly Inc. Top agencies DOT (Department of Transportation)	$801,999	0.3%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
44	Anra Technologies, Inc. Top agencies DOT (Department of Transportation)	$753,775	0.3%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
45	Applied Research Associates, Inc. Top agencies DOT (Department of Transportation)	$740,414	0.3%	Rank history: #50 in FY2021, #59 in FY2023, not on the FY2024 list and #33 in FY2025; up 5 since FY2021.
46	Engineering & Software Consultants, LLC Top agencies DOT (Department of Transportation)	$665,063	0.2%	Rank history: #19 in FY2021, #33 in FY2023, #17 in FY2024 and #32 in FY2025; down 27 since FY2021.
47	Uavionix Corp Top agencies DOT (Department of Transportation)	$661,938	0.2%	Rank history: not on the FY2021 list, #36 in FY2023 and not on the FY2024–FY2025 lists; new.
48	Hydronalix Inc. Top agencies Navy (Department of the Navy)	$649,862	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
49	Advent Innovations Ltd Co Top agencies DOT (Department of Transportation)	$645,370	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
50	Interphase Materials, Inc. Top agencies DOT (Department of Transportation)	$641,446	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 73 since FY2021.
51	The Cadmus Group LLC Top agencies DOT (Department of Transportation)	$603,775	0.2%	Rank history: #62 in FY2021, #40 in FY2023, #41 in FY2024 and not on the FY2025 list; up 11 since FY2021.
52	Intelligent Transportation Society of America (Its America) Top agencies DOT (Department of Transportation)	$578,595	0.2%	Rank history: #34 in FY2021, #39 in FY2023, #81 in FY2024 and #28 in FY2025; down 18 since FY2021.
53	The Commonwealth of Massachusetts Through Northeastern University Top agencies DOT (Department of Transportation)	$577,429	0.2%	Rank history: #22 in FY2021 and not on the FY2023–FY2025 lists; down 31 since FY2021.
54	Association of American Railroads Through Transportation Technology Center, Inc. Top agencies DOT (Department of Transportation)	$559,984	0.2%	Rank history: #3 in FY2021 and not on the FY2023–FY2025 lists; down 51 since FY2021.
55	Kea Technologies Inc. Top agencies DOT (Department of Transportation)	$559,803	0.2%	Rank history: #66 in FY2021, #74 in FY2023 and not on the FY2024–FY2025 lists; up 11 since FY2021.
56	Diakon Solutions LLC Top agencies DOT (Department of Transportation)	$553,984	0.2%	Rank history: not on the FY2021 list, #13 in FY2023, #11 in FY2024 and #11 in FY2025; new.
57	University of South Carolina Top agencies DOT (Department of Transportation)	$551,052	0.2%	Rank history: #52 in FY2021, #63 in FY2023 and not on the FY2024–FY2025 lists; down 5 since FY2021.
58	Cycla Corporation Top agencies DOT (Department of Transportation)	$547,701	0.2%	Rank history: #27 in FY2021 and not on the FY2023–FY2025 lists; down 31 since FY2021.
59	Washington Metropolitan Area Transit Authority Top agencies USAGM (US Agency for Global Media)	$514,301	0.2%	Rank history: not on the FY2021 list, #62 in FY2023, #74 in FY2024 and #61 in FY2025; up 102 since FY2021.
60	Westinghouse Air Brake Technologies Corp Top agencies DOT (Department of Transportation)	$500,000	0.2%	Rank history: not on the FY2021 list, #86 in FY2023 and not on the FY2024–FY2025 lists; new.
61	Haas, Inc. Top agencies DOT (Department of Transportation)	$499,993	0.2%	Rank history: not on the FY2021 list, not on the FY2023–FY2024 lists and #48 in FY2025; up 64 since FY2021.
62	Acrow Corporation of America Top agencies DOT (Department of Transportation)	$499,917	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
63	International Electronic Machines Corporation Top agencies DOT (Department of Transportation)	$499,879	0.2%	Rank history: not on the FY2021 list, not on the FY2023 list, #100 in FY2024 and #63 in FY2025; up 59 since FY2021.
64	Coherent Technical Services, Inc. Top agencies DOT (Department of Transportation)	$498,963	0.2%	Rank history: not on the FY2021 list, not on the FY2023–FY2024 lists and #54 in FY2025; up 57 since FY2021.
65	Integrated Solutions for Systems, Inc. Top agencies DOT (Department of Transportation)	$495,906	0.2%	Rank history: not on the FY2021 list, not on the FY2023–FY2024 lists and #56 in FY2025; up 63 since FY2021.
66	Southwest Research Institute Top agencies DOT (Department of Transportation)	$434,267	0.1%	Rank history: #71 in FY2021 and not on the FY2023–FY2025 lists; up 5 since FY2021.
67	Weris, Inc. Top agencies DOT (Department of Transportation)	$429,006	0.1%	Rank history: not on the FY2021 list, #70 in FY2023, not on the FY2024 list and #58 in FY2025; new.
68	Synetics Systems Engineering Corp. Top agencies DOT (Department of Transportation)	$412,984	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 43 since FY2021.
69	ADA Technologies, LLC Top agencies DOT (Department of Transportation)	$399,928	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 49 since FY2021.
70	Schatz Publishing Group, LLC Top agencies DOT (Department of Transportation)	$399,120	0.1%	Rank history: not on the FY2021 list, #61 in FY2023, #63 in FY2024 and #65 in FY2025; new.
71	Truesafety Evaluation, LLC Top agencies DOT (Department of Transportation)	$388,620	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
72	Toxcel LLC Top agencies DOT (Department of Transportation)	$374,802	0.1%	Rank history: #33 in FY2021, not on the FY2023 list, #22 in FY2024 and #9 in FY2025; down 39 since FY2021.
73	Michigan Technological University Top agencies DOT (Department of Transportation)	$370,071	0.1%	Rank history: #53 in FY2021, #65 in FY2023, #86 in FY2024 and not on the FY2025 list; down 20 since FY2021.
74	Tier 1 Performance Solutions LLC Top agencies DOT (Department of Transportation)	$367,958	0.1%	Rank history: not on the FY2021 list, #94 in FY2023 and not on the FY2024–FY2025 lists; new.
75	American Center for Mobility Top agencies DOT (Department of Transportation)	$343,591	0.1%	Rank history: not on the FY2021 list, not on the FY2023 list, #83 in FY2024 and not on the FY2025 list; new.
76	Clemson University Top agencies Army (Department of the Army)	$331,805	0.1%	Rank history: #88 in FY2021, #81 in FY2023 and not on the FY2024–FY2025 lists; up 12 since FY2021.
77	Lights Visions Company Top agencies Army (Department of the Army)	$327,548	0.1%	Rank history: #57 in FY2021 and not on the FY2023–FY2025 lists; down 20 since FY2021.
78	Friedman Research Corp Top agencies DOT (Department of Transportation)	$323,859	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
79	Regents Tennessee Board of Through University of Memphis Top agencies DOT (Department of Transportation)	$318,455	0.1%	Rank history: not on the FY2021 list, #77 in FY2023 and not on the FY2024–FY2025 lists; new.
80	Newport Sensors Inc. Top agencies DOT (Department of Transportation)	$312,960	0.1%	Rank history: #63 in FY2021 and not on the FY2023–FY2025 lists; down 17 since FY2021.
81	International Road Dynamics Inc. Top agencies DOT (Department of Transportation)	$309,232	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 33 since FY2021.
82	Rutgers, the State University Top agencies DOT (Department of Transportation)	$301,000	0.1%	Rank history: #15 in FY2021, #85 in FY2023 and not on the FY2024–FY2025 lists; down 67 since FY2021.
83	Iteris, Inc. Top agencies DOT (Department of Transportation)	$294,622	0.1%	Rank history: #82 in FY2021 and not on the FY2023–FY2025 lists; down 1 since FY2021.
84	American Short Line & Regional Railroad Association Top agencies DOT (Department of Transportation)	$290,064	0.1%	Rank history: not on the FY2021 list, #71 in FY2023 and not on the FY2024–FY2025 lists; new.
85	AECOM Through AECOM Technical Services, Inc. Top agencies DOT (Department of Transportation)	$266,225	0.1%	Rank history: not on the FY2021 list, #57 in FY2023 and not on the FY2024–FY2025 lists; up 64 since FY2021.
86	Quality Engineering Solutions Inc. Top agencies DOT (Department of Transportation)	$265,500	0.1%	Rank history: not on the FY2021 list, not on the FY2023–FY2024 lists and #40 in FY2025; new.
87	Arkansas University Of Through University of Arkansas Top agencies DOT (Department of Transportation)	$261,262	0.1%	Rank history: not on the FY2021 list, #92 in FY2023 and not on the FY2024–FY2025 lists; new.
88	University of Tennessee Top agencies DOT (Department of Transportation)	$246,995	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
89	Thornton Tomasetti, Inc. 2 awardees Top agencies DOT (Department of Transportation)	$238,285	0.1%	Rank history: not on the FY2021 list, #93 in FY2023 and not on the FY2024–FY2025 lists; new.
90	Brigham & Womens Hospital Inc Top agencies DOT (Department of Transportation)	$231,141	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
91	University of Texas System 2 awardees, including University of Texas At Austin Top agencies DOT (Department of Transportation)	$229,586	0.1%	Rank history: #99 in FY2021, #83 in FY2023 and not on the FY2024–FY2025 lists; up 8 since FY2021.
92	University of Houston System Top agencies DOT (Department of Transportation)	$202,114	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
93	University System of Maryland Through University of Maryland, College Park Top agencies DOT (Department of Transportation)	$200,000	0.1%	Rank history: not on the FY2021 list, #32 in FY2023, #72 in FY2024 and not on the FY2025 list; new.
94	Mcet Technologies LLC Top agencies DOT (Department of Transportation)	$200,000	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
95	Adelphi Technology Inc. Top agencies DOT (Department of Transportation)	$199,997	0.1%	Rank history: not on the FY2021 list, #44 in FY2023 and not on the FY2024–FY2025 lists; new.
96	Trainfo Corporation Top agencies DOT (Department of Transportation)	$199,550	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 8 since FY2021.
97	Right Click Solutions Inc. Top agencies DOT (Department of Transportation)	$198,062	0.1%	Rank history: not on the FY2021 list, #76 in FY2023 and not on the FY2024–FY2025 lists; new.
98	Splusm LLC Top agencies DOT (Department of Transportation)	$197,628	0.1%	Rank history: not on the FY2021 list, #73 in FY2023 and not on the FY2024–FY2025 lists; new.
99	Revolt Battery Technology Corp Top agencies DOT (Department of Transportation)	$197,122	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
100	Tranalytics, LLC Top agencies DOT (Department of Transportation)	$195,048	0.1%	Rank history: not on the FY2021 list, #75 in FY2023, not on the FY2024 list and #88 in FY2025; new.

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100 of 162 contractors listed here. See the rest on GovTribe.

Rankings for the codes under PSC AS

Code	Net obligations	Largest contractor
AS11 Transportation R&D Services; Surface Transportation, Public Transit, and Rail; Basic Research	$83,979,430	Noblis, Inc.
AS12 Transportation R&D Services; Surface Transportation, Public Transit, and Rail; Applied Research	$50,526,432	Leidos Holdings, 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 $294 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 PSC AS contractors in FY2022?

1. General Electric Company ($29.5M), 2. Lockheed Martin Corporation ($27.4M), 3. Magnix USA Inc. ($19.6M), 4. Leidos Holdings, Inc. ($18.4M), 5. Pacific Layberthing South, LLC ($16M), 6. Noblis, Inc. ($15M), 7. RTX Corporation ($14.7M), 8. Hermeus Corp ($11.6M), 9. Dunlap and Associates, Inc. ($7.7M), 10. US Ecology, Inc. ($7M).

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