Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Who is considered part of the field transportation and can pay for TSA’s vetting services through user fees?

According to fee statute (6 U.S.C. 469(a)), the field of transportation includes any individual, activity, entity, facility, owner or operator subject to regulation by TSA, the Department of Transportation or the U.S. Coast Guard. This also includes individuals applying for trusted traveler programs, such as TSA PreCheck.