; and (2) by adding at the end the following new subsection: (g) Additional reports (1) Initial progress report Not later than 1 years after the date of enactment of this subsection, the Administrator shall submit to the appropriate committees of Congress a report describing— (A) the progress of the actions described in subsection (d)(1); (B) any planned, proposed, or anticipated action to update or modify existing policies and regulations related to civil supersonic aircraft, including those identified as a result of stakeholder consultation and feedback (such as landing and takeoff noise); and (C) any other information determined appropriate by the Administrator. (2) Subsequent report Not later than 2 years after the date on which the Administrator submits the initial progress report under paragraph (1), the Administrator shall submit to the appropriate committees of Congress an updated report on the progress of the actions described in paragraph (1). . 906. CLEEN engine and airframe technology partnership Section 47511 of title 49, United States Code, is amended— (1) in subsection (a), by striking subsonic after fuels for civil