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
532411 – Commercial Air, Rail, and Water Transportation Equipment Rental and Leasing
454310 – Fuel Dealers
532490 – Other Commercial and Industrial Machinery and Equipment Rental and Leasing
488111 – Air Traffic Control
424720 – Petroleum and Petroleum Products Merchant Wholesalers (except Bulk Stations and Terminals)