NAICS 541990 and PSC AC32 contractors in Illinois

All Other Professional, Scientific, and Technical Services. NATIONAL DEFENSE R&D SERVICES; DEFENSE-RELATED ACTIVITIES; APPLIED RESEARCH. Use this deeper state cross-code page to see which visible contractors sit in the overlap between these two lanes inside Illinois.

Illinois · NAICS 541990 · PSC AC32

Last updated: April 8, 2026

Visible recipients

Mapped obligations

$3,387,064,766

Buyer overlap

Top recipients

Visible recipients in the Illinois overlap of NAICS 541990 and PSC AC32

Hii Mission Technologies CORP

Willowbrook, IL

Hii Mission Technologies CORP is a federal category business profile based in Willowbrook, IL. The current public data layer shows $380,690,397 in visible federal obligations across 464 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 AZ12.

$3,387,064,766