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Department of the Interior NAICS 561621 and PSC R499 contractors

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

Department of the Interior · NAICS 561621 · PSC R499
Last updated: April 8, 2026

Visible recipients

4

Mapped obligations

$253,279,029

State overlap

3

Top recipients

Visible recipients in the Department of the Interior overlap of NAICS 561621 and PSC R499

Alutiiq Global Solutions, LLC

Anchorage, AK

Alutiiq Global Solutions, LLC is a federal alaskan native corporation owned firm profile based in Anchorage, AK. The current public data layer shows $208,315,787 in visible federal obligations across 5 awards or transactions. Department of Defense appears as the strongest visible awarding agency. Top industry concentration is in NAICS 236220 (Commercial and Institutional Building Construction). The profile also shows meaningful product and service activity in PSC Y199.

$47,596,770

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.

$182,273,844

The Whitestone Group, Inc.

Reynoldsburg, OH

The Whitestone Group, Inc. is a federal category business profile based in Reynoldsburg, OH. The current public data layer shows $44,135,018 in visible federal obligations across 67 awards or transactions. Department of Transportation appears as the strongest visible awarding agency. Top industry concentration is in NAICS 561612 (Security Guards and Patrol Services). The profile also shows meaningful product and service activity in PSC S206.

$19,047,607

Chenega Security International California

Chantilly, VA

Chenega Security International California is a federal alaskan native corporation owned firm profile based in Chantilly, VA. The current public data layer shows $15,708,482 in visible federal obligations across 1 awards or transactions. Department of the Interior appears as the strongest visible awarding agency. Top industry concentration is in NAICS 561612 (Security Guards and Patrol Services). The profile also shows meaningful product and service activity in PSC S206.

$4,360,808