State + agency + NAICS page

Department of Homeland Security NAICS 561621 contractors in Virginia

Security Systems Services (except Locksmiths). Use this deeper state-buyer-industry page to see which visible contractors sit closest to this exact overlap in the public AwardRegistry layer.

Virginia + Department of Homeland Security
Last updated: April 3, 2026

Visible recipients

5

Mapped obligations

$1,919,057,372

Top PSC links

4

Top recipients

Visible recipients tied to Department of Homeland Security, Virginia, and NAICS 561621

Serco INC

Herndon, VA

Serco INC is a federal category business profile based in Herndon, VA. The current public data layer shows $1,006,141,546 in visible federal obligations across 1,029 awards or transactions. Department of Defense appears as the strongest visible awarding agency. Top industry concentration is in NAICS 541330 (Engineering Services). The profile also shows meaningful product and service activity in PSC R499.

$653,436,871

Paragon Systems INC

Herndon, VA

Paragon Systems INC is a federal category business profile based in Herndon, VA. The current public data layer shows $533,359,903 in visible federal obligations across 692 awards or transactions. Department of Homeland Security 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.

$257,864,029

Triple Canopy INC

Herndon, VA

Triple Canopy INC is a federal category business profile based in Herndon, VA. The current public data layer shows $370,722,968 in visible federal obligations across 334 awards or transactions. Department of State 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.

$244,892,339

M. C. Dean, Inc.

Tysons, VA

M. C. Dean, Inc. is a federal category business profile based in Tysons, VA. The current public data layer shows $367,300,314 in visible federal obligations across 1,298 awards or transactions. Department of Defense appears as the strongest visible awarding agency. Top industry concentration is in NAICS 541330 (Engineering Services). The profile also shows meaningful product and service activity in PSC J058.

$721,414,306

Centerra Group, LLC

Herndon, VA

Centerra Group, LLC is a federal category business profile based in Herndon, VA. The current public data layer shows $305,938,174 in visible federal obligations across 143 awards or transactions. Department of Energy 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.

$41,449,827