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
561210 – Facilities Support Services
541715 – Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)
483111 – Deep Sea Freight Transportation
483114 – Coastal and Great Lakes Passenger Transportation
483113 – Coastal and Great Lakes Freight Transportation
541611 – Administrative Management and General Management Consulting Services