; (D) the Secretary; (E) Federal, State, Tribal, territorial, and local emergency management officials; (F) first responders; (G) technology experts in resilience and accessibility; (H) radio broadcasters; (I) manufacturers of passenger motor vehicles; and (J) other relevant stakeholders, as determined by the Comptroller General. (g) Briefing and report (1) Briefing Not later than 1 year after the date of enactment of this Act, the Comptroller General shall brief the appropriate committees of Congress on the results of the study required by subsection (f)(1), including recommendations for legislation and administrative action as the Comptroller General determines appropriate. (2) Report Not later than 180 days after the date on which the Comptroller General provides the briefing required under paragraph (1), the Comptroller General shall submit to the appropriate committees of Congress a report describing the results of the study required under subsection (f)(1), including recommendations for legislation and administrative action as the Comptroller General determines appropriate. (h) Review Not less frequently than once every 5 years after the date on which the Secretary issued the rule required by subsection (a), the Secretary, in coordination with the Administrator and the Federal Communications Commission, shall submit to the appropriate committees of Congress a report that shall include an assessment of— (1) the impacts of the rule issued under that subsection, including the impacts on public safety; and (2) changes to IPAWS communication technologies that enable resilient and accessible alerts to drivers and passengers of passenger motor vehicles.