; and (2) knowledge of Federal Aviation Administration regulations and requirements pertaining to the operation of an unmanned aircraft system in the national airspace system. (e) Record of compliance (1) In general Each operator of an unmanned aircraft system described under subsection (a) shall maintain and make available for inspection, upon request by the Administrator or a Federal, State, or local law enforcement officer, a record of compliance with this section through— (A) an identification number, issued by the Federal Aviation Administration certifying passage of the aeronautical knowledge and safety test; (B) if the individual has authority to operate an unmanned aircraft system under other Federal law, the requisite proof of authority under that law