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Department of Homeland Security NAICS 541990 and PSC R499 contractors

All Other Professional, Scientific, and Technical Services. SUPPORT- PROFESSIONAL: OTHER. Cross-code overlap under Department of Homeland Security.

Department of Homeland Security · NAICS 541990 · PSC R499

Last updated: April 17, 2026

Visible recipients

Mapped obligations

$16,624,909,430

State overlap

Top recipients

Visible recipients in the Department of Homeland Security overlap of NAICS 541990 and PSC R499

Arc Aspicio LLC

Arlington, VA

Arlington, VA | 59 awards | Top agency Department of Homeland Security | NAICS 541512

$73,278,033

Solutions Through Innovative Technologies INC

Fairborn, OH

Fairborn, OH | 72 awards | Top agency Department of Defense | NAICS 541330

$238,535,510

Hoh Indian Tribe

Forks, WA

Forks, WA | 56 awards | Top agency Department of the Interior | NAICS 541990

$109,056

Acclaim Technical Services, LLC

Reston, VA

Reston, VA | 13 awards | Top agency Department of Justice | NAICS 541930

$4,450,495

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