National Defense R&D Services: Atomic Energy Defense Activities (Basic Research) Government Contracts
PSC AC21 Service code
Code facts
- Spend category
- Research and Development
- Part of
-
-
A
- AC
-
A
- Contract obligations
- $276,713,598 In FY2025
PSC codes and definitions come from the GSA PSC Manual and contract spending from SAM.gov/FPDS.
Market summary
Top buying agencies by obligations
| Rank | Agency | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Air Force | $229,861,205 | |
| 2 | Department of the Army | $12,401,619 | |
| 3 | Department of Energy | $4,067,338 | |
| 4 | Defense Logistics Agency | $1,199,974 | |
| 5 | Department of the Navy | $625,000 |
Top contractors by obligations
| Rank | Contractor | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Bluestaq LLC | $147,793,842 | |
| 2 | Kratos S2, Inc. | $26,931,886 | |
| 3 | Accion Systems Inc. | $19,975,608 | |
| 4 | Tecolote Research, Inc. | $14,260,949 | |
| 5 | Amentum Technology, Inc. | $11,462,112 | |
| 6 | X-Bow Launch Systems Inc. | $6,264,815 | |
| 7 | Serco Inc. | $4,488,992 | |
| 8 | Teledyne Brown Engineering, Inc. | $4,369,641 | |
| 9 | Nevada System Of Higher Education | $4,067,338 | |
| 10 | QWK Integrated Solutions, LLC | $3,575,827 |
See the full FY2025 ranking of PSC AC21 contractors, by parent company.
Open contract opportunities
Recent contract awards
| Award | Awarded | Obligated |
|---|---|---|
| RSS RTS mission safety division with analysis support performed for missions conducted at RTS, RTS as the lead safety… | $395,686 | |
| Propulsive adaptor for long-duration orbital maneuvers | $19,975,607 | |
| RSS to 14 EFT-02 | $240,000 | |
| Spectral signature of objects in a space-like operational environment | $3,213,300 |
Contract obligations by fiscal year
| Fiscal year | Obligated |
|---|---|
| FY2027 To date | $24,708,859 |
| FY2026 | $218,006,138 |
| FY2025 | $276,713,598 |
| FY2024 | $311,054,263 |
| FY2023 | $293,860,856 |
Top NAICS codes by obligations
| Rank | NAICS code | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | 541990 All Other Professional, Scientific, and Technical Services | $147,793,842 | |
| 2 | 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) | $60,410,276 | |
| 3 | 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology) | $32,673,856 | |
| 4 | 561790 Other Services to Buildings and Dwellings | $1,199,974 | |
| 5 | 541330 Engineering Services | $635,686 |
Contract obligations by state
| Rank | Place of performance | Obligated, last 12 months | Share |
|---|---|---|---|
| 1 | Colorado | $174,341,555 | |
| 2 | California | $22,115,731 | |
| 3 | Massachusetts | $19,975,608 | |
| 4 | Tennessee | $11,462,112 | |
| 5 | Alabama | $8,537,615 | |
| 6 | Texas | $4,095,119 | |
| 7 | Nevada | $4,067,338 | |
| 8 | Connecticut | $1,199,974 | |
| 9 | New Mexico | $952,061 | |
| 10 | Utah | $432 |
Shares are of everything obligated under PSC AC21 in the last 12 months before deobligations, including work performed abroad or with no place of performance on record.
Quick answers
What is PSC AC21?
PSC AC21 is National Defense R&D Services; Atomic Energy Defense Activities; Basic Research, a service code in PSC A, Research and Development.
How many government contracts for national defense R&D services: atomic energy defense activities (basic research) are there?
1 contract opportunity under PSC AC21 is open now, and 1 notice was posted in the last 90 days. Federal agencies awarded 4 contracts under PSC AC21 in the last 12 months, obligating $242,042,793.
How much do federal agencies spend under PSC AC21?
Federal contracts under PSC AC21 obligated $276,713,598 in fiscal year 2025 and $1,124,343,715 in fiscal years 2023 through 2027.
Who are the largest contractors under PSC AC21?
The contractors with the most obligated under PSC AC21 in fiscal years 2026 and 2027 are Bluestaq LLC ($147,793,842); Kratos S2, Inc. ($26,931,886); and Accion Systems Inc. ($19,975,608).
Which agencies buy the most under PSC AC21?
The agencies that obligated the most under PSC AC21 in fiscal years 2026 and 2027 are Air Force ($229,861,205), Department of the Army ($12,401,619) and Department of Energy ($4,067,338).
Which NAICS codes are used with PSC AC21?
The NAICS codes with the most obligated under PSC AC21 in fiscal years 2026 and 2027 are 541990 All Other Professional, Scientific, and Technical Services; 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology); and 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology).
Where is the work under PSC AC21 performed?
By place of performance, the states with the most contract obligations under PSC AC21 over the last 12 months are Colorado ($174,341,555), California ($22,115,731) and Massachusetts ($19,975,608).
What is the latest open contract opportunity under PSC AC21?
The latest open contract opportunity under PSC AC21 is Space propulsion research and innovation for neutralizing satellite threats (SPRINT) broad agency announcement (BAA), pre-solicitation from Air Force Test Center (AFMC), posted February 7, 2019.
On GovTribe
See everything under PSC AC21
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