Department of Defense NAICS 561621 and PSC R604 contractors

Security Systems Services (except Locksmiths). SUPPORT- ADMINISTRATIVE: MAILING/DISTRIBUTION. Use this deeper buyer cross-code page to see which visible contractors sit in the overlap between these two lanes under Department of Defense.

Department of Defense · NAICS 561621 · PSC R604

Last updated: April 3, 2026

Visible recipients

Mapped obligations

$584,472,940

State overlap

Top recipients

Visible recipients in the Department of Defense overlap of NAICS 561621 and PSC R604

Siemens Government Technologies INC

Arlington, VA

Siemens Government Technologies INC is a federal category business profile based in Arlington, VA. The current public data layer shows $111,989,171 in visible federal obligations across 227 awards or transactions. Department of Defense appears as the strongest visible awarding agency. Top industry concentration is in NAICS 541512 (Computer Systems Design Services). The profile also shows meaningful product and service activity in PSC N059.

$584,472,940