(c) REQUIRED IMPLEMENTATION OF IDENTIFIED STAFFING MODEL.—(1) USE OF STAFFING MODEL.—The Administrator shall, as appropriate, take such action that may be necessary to implement and use the staffing model identified by the Transportation Research Board pursuant to subsection(b)(1)(D), including any recommendations for improving such model, not later than one year after enactment of this Act.
(2) BRIEFING.—Not later than 90 days after taking such actions to implement and use the staffing model identified by the Transportation Research Board pursuant to subsection(b)(1)(D), the Administrator shall brief the appropriate committees of Congress regarding the reasons for why any recommendation by the Transportation Research Board study was not incorporated into the implemented staffing model.