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Home/Illinois/Department of Defense/PSC R499

State + agency + PSC page

Department of Defense PSC R499 contractors in Illinois

SUPPORT- PROFESSIONAL: OTHER. Use this deeper state-buyer-PSC page to see which visible contractors sit closest to this exact overlap in the public AwardRegistry layer.

Illinois + Department of Defense
Last updated: April 8, 2026

Visible recipients

2

Mapped obligations

$4,488,755,620

Top NAICS links

4

Top recipients

Visible recipients tied to Department of Defense, Illinois, and PSC R499

Alion Science And Technology Corporation

Chicago, IL

Alion Science And Technology Corporation is a federal category business profile based in Chicago, IL. The current public data layer shows $1,391,195,185 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 541710 (Research and Development in the Physical, Engineering, and Life Sciences). The profile also shows meaningful product and service activity in PSC AZ12.

$209,517,471

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.

$4,279,238,149

Next paths

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Back to Department of Defense in Illinois

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Open Illinois PSC R499

View the state-scoped PSC page outside the current buyer filter.

Open NAICS 541330

Move from product-service view into the strongest industry overlap attached to this exact state-buyer slice.

Open NAICS 541712

Move from product-service view into the strongest industry overlap attached to this exact state-buyer slice.

Open NAICS 541715

Move from product-service view into the strongest industry overlap attached to this exact state-buyer slice.

Open NAICS 541990

Move from product-service view into the strongest industry overlap attached to this exact state-buyer slice.

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