; and (B) billing an insurance company for any medical costs incurred as a result of Federal Aviation Administration employees, their spouses, or their dependent children accessing and receiving medical treatment or services at a Department of Defense hospital located in Guam. (b) Funds subject to appropriations Funds for payments by the Federal Aviation Administration described in subsection (a)(2) are subject to the availability of amounts specifically provided in advance for that purpose in appropriations Acts. 544. Clarification of requirements for living history flights (a) In general Notwithstanding any other law or regulation, in administering sections 61.113(c), 91.9, 91.315, 91.319(a)(1), 91.319(a)(2), 119.5(g), and 119.21(a) of title 14, Code of Federal Regulations (or any successor regulations), the Administrator of the Federal Aviation Administration shall allow an aircraft owner or operator to accept monetary or in-kind donations for a flight operated by a living history flight experience provider, if the aircraft owner or operator has— (1) volunteered to provide such transportation