; (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 part 139 airport implementation plans for obtaining approved military specification products and firefighting personnel training. (2) A comprehensive list of the amount of rolling stock of firefighting foam at each part 139 airport as of the date of the submission of the progress report 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 it relates to the use of fluorine-free firefighting foam at such airports. (4) Such other information as the Administrator determines appropriate. (c) Progress report termination date For purposes of subsection (a), 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) Definition In this section, the term part 139 airport means an airport certified under part 139 of title 14, Code of Federal Regulations. 628. Review of airport layout plans (a) In general Section 163 of the FAA Reauthorization Act of 2018 ( 49 U.S.C. 47107 note) is amended— (1) by striking subsection (a) and inserting the following: (a) [Reserved].