; (C) best practices for the decontamination of existing aircraft rescue and firefighting vehicles, systems, and other equipment used to deploy firefighting foam at part 139 airports; and (D) timelines for the release of policy and guidance relating to the development of implementation plans for part 139 airports to obtain approved military specification products and firefighting personnel training. (2) A comprehensive list of the amount of aqueous film-forming firefighting foam at each part 139 airport as of the date of the submission of the progress report, including the amount of such firefighting foam held in firefighting equipment and the number of gallons regularly kept in reserve at each such airport. (3) An assessment of the progress made by the FAA with respect to providing airports that are not part 139 airports and local authorities with responsibility for inspection and oversight with guidance described in subparagraphs (A) and (B) of paragraph (1) as such guidance relates to the use of fluorine-free firefighting foam at such airports. (4) Any other information that the Administrator determines is appropriate. (c) Progress report termination date The progress report termination date described in this subsection is the date on which the Administrator notifies the appropriate committees of Congress that development and implementation of the national transition plan described in subsection (a) is complete. (d) Part 139 airport defined In this section, the term part 139 airport means an airport certified under part 139 of title 14, Code of Federal Regulations. 763. Report on airport notifications Not later than 2 years after the date of enactment of this Act, the Administrator shall submit to the appropriate committees of Congress a report on the activities of the FAA with respect to— (1) collecting more accurate data in notices of construction, alteration, activation, and deactivation of airports as required under part 157 of title 14, Code of Federal Regulations