; and (ii) to submit updated or additional data to the Secretary in support of the reconsideration; (B) to allow the Secretary not more than 90 days to review the data submitted under subparagraph (A)(ii) and respond to the request under subparagraph (A)(i); (C) to allow the airport, State, or political subdivision of a State, as applicable, 30 days following the date of the response under subparagraph (B) to review the response before any action is taken based on a benefit-to-cost determination; and (D) to provide, after the end of the period described in subparagraph (C), an 18-month grace period before cost-share payments are due from the airport, State, or political subdivision of a State if as a result of the benefit-to-cost ratio determination the airport, State, or political subdivision, as applicable, is required to transition to the Cost-share Program. (e) Definitions In this section: (1) Contract tower program The term Contract Tower Program means the level I air traffic control tower contract program established under subsection (a) and continued under subsection (b)(1). (2) Cost-share program The term Cost-share Program means the cost-share program established under subsection (b)(3). . (e) Conforming amendments Section 47124(b) is amended— (1) in paragraph (1)(C), by striking the program established under paragraph (3) and inserting the Cost-share Program ; (2) in paragraph (3)— (A) in the heading, by striking Contract air traffic control tower program and inserting Cost-share program ; (B) in subparagraph (A), by striking contract tower program established under subsection (a) and continued under paragraph (1) (in this paragraph referred to as the Contract Tower Program ) and inserting Contract Tower Program ; (C) in subparagraph (B), by striking In carrying out the program and inserting In carrying out the Cost-share Program ; (D) in subparagraph (C), by striking participate in the program and inserting participate in the Cost-share Program