; (5) the number of full-time Federal Aviation Administration employees dedicated to unmanned aircraft programs; (6) the use of privately operated UTM and other privately operated unmanned aircraft systems; (7) the projected growth of unmanned aircraft operations for various applications and the estimated need for regulation, oversight, and other services; (8) the number of small businesses involved in the various sectors of the unmanned aircraft industry and operating as primary users of unmanned aircraft; and (9) any best practices or policies utilized by jurisdictions outside the United States relating to partial or total recovery of regulation and safety oversight costs related to unmanned aircraft and other emergent technologies. (c) Report to Congress Not later than 180 days after initiating the study, the Comptroller General shall submit to the appropriate committees of Congress a report containing recommendations on appropriate fee mechanisms to recover the costs of regulating and providing air navigation services to unmanned aircraft and unmanned aircraft systems. 361. Report on UAS and chemical aerial application Not later than 1 year after the date of enactment of this Act, the Administrator shall submit to the appropriate committees of Congress a report evaluating which aviation safety requirements under part 137 of title 14, Code of Federal Regulations, should apply to unmanned aircraft system operations engaged in aerial spraying of chemicals for agricultural purposes. 362. Sense of Congress regarding unmanned aircraft safety It is the sense of Congress that— (1) the unauthorized operation of unmanned aircraft near airports presents a serious hazard to aviation safety; (2) a collision between an unmanned aircraft and a conventional aircraft in flight could jeopardize the safety of persons aboard the aircraft and on the ground