Department of Homeland Security NAICS 541990 and PSC AD92 contractors

All Other Professional, Scientific, and Technical Services. R&D- DEFENSE OTHER: OTHER (APPLIED RESEARCH/EXPLORATORY DEVELOPMENT). Cross-code overlap under Department of Homeland Security.

Department of Homeland Security · NAICS 541990 · PSC AD92

Last updated: April 8, 2026

Visible recipients

Mapped obligations

$878,299,612

State overlap

Top recipients

Visible recipients in the Department of Homeland Security overlap of NAICS 541990 and PSC AD92

Alion Science And Technology Corporation

Chicago, IL

Chicago, IL | 5 awards | Top agency Department of Defense | NAICS 541710

$135,381,879

Applied Research Associates, Inc.

Albuquerque, NM

Albuquerque, NM | 564 awards | Top agency Department of Defense | NAICS 541712

$742,917,733

Agency profile

Loading buyer-level contractor and category paths

Home/Department of Homeland Security/NAICS 541990/PSC AD92

Agency + NAICS + PSC page