; and (B) by adding at the end the following: Airports with air service provided under part 121 of title 14, Code of Federal Regulations, and more than 25,000 passenger enplanements in calendar year 2014 shall be exempt from any cost-share requirement under this paragraph. . (3) Construction of air traffic control towers (A) Grants Section 47124(b)(4)(A) of title 49, United States Code, is amended in each of clauses (i)(III) and (ii)(III) by inserting , including remote air traffic control tower equipment certified by the Federal Aviation Administration after 1996 . (B) Eligibility Section 47124(b)(4)(B)(i)(I) of title 49, United States Code, is amended by striking contract tower program established under subsection (a) and continued under paragraph (1) or the pilot program established under paragraph (3) and inserting Contract Tower Program or the Cost-share Program . (C) Limitation on federal share Section 47124(b)(4) of title 49, United States Code, is amended by striking subparagraph (C). (4) Benefit-to-cost calculation for program applicants Section 47124(b)(3) of title 49, United States Code, is amended by adding at the end the following: (G) Benefit-to-cost calculation Not later than 90 days after receiving an application to the Contract Tower Program, the Secretary shall calculate a benefit-to-cost ratio (as described in subsection (d)) for the applicable air traffic control tower for purposes of selecting towers for participation in the Contract Tower Program. . (b) Criteria To evaluate participants Section 47124 of title 49, United States Code, is amended by adding at the end the following: (d) Criteria To evaluate participants (1) Timing of evaluations (A) Towers participating in cost-share program In the case of an air traffic control tower that is operated under the Cost-share Program, the Secretary shall annually calculate a benefit-to-cost ratio with respect to the tower. (B) Towers participating in contract tower program In the case of an air traffic control tower that is operated under the