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NAICS 561611 and PSC R425 contractors in Maryland

Investigation and Personal Background Check Services. SUPPORT- PROFESSIONAL: ENGINEERING/TECHNICAL. Use this deeper state cross-code page to see which visible contractors sit in the overlap between these two lanes inside Maryland.

Maryland · NAICS 561611 · PSC R425
Last updated: April 3, 2026

Visible recipients

1

Mapped obligations

$383,403,364

Buyer overlap

4

Top recipients

Visible recipients in the Maryland overlap of NAICS 561611 and PSC R425