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3. Federal Aviation Administration (FAA) (2022, July 28). Drones by the Numbers, Available online: https://www.faa.gov/uas/resources/by_the_numbers/.
4. Federal Aviation Administration (FAA) (2022, July 28). FAA Releasable 2021 Aircraft Registration Database, Available online: https://www.faa.gov/licenses_certificates/aircraft_certification/aircraft_registry/releasable_aircraft_download.
5. Federal Aviation Administration (FAA) (2022, March 06). FAA Reaches One Million Airspace Authorizations for Drone Pilots, Available online: https://www.faa.gov/newsroom/faa-reaches-one-million-airspace-authorization-drone-pilots.