This means that you'll be able to search for NAICS codes directly (if that's your jam). We'll do the math; let's make better data on public procurement together.
Possible NAICS Codes
922140 – Correctional Institutions
561210 – Facilities Support Services
922190 – Other Justice, Public Order, and Safety Activities
921140 – Executive and Legislative Offices, Combined
561990 – All Other Support Services