; or (vii) other relevant technologies. (B) Expanding flight test opportunities through low-cost, high-cadence platforms. (c) Coordination If the Secretary of the Air Force carries out a pilot program under this section, the Secretary shall ensure that the activities under the pilot program are carried out in coordination with the Secretary of Defense and the Secretary of the Navy. (d) Termination The authority to carry out a pilot program under this section shall terminate on December 31, 2029. 1646. Prohibition on reduction of the intercontinental ballistic missiles of the United States (a) Prohibition Except as provided in subsection (b), none of the funds authorized to be appropriated by this Act or otherwise made available for fiscal year 2024 for the Department of Defense may be obligated or expended for the following, and the Department may not otherwise take any action to do the following: (1) Reduce, or prepare to reduce, the responsiveness or alert level of the intercontinental ballistic missiles of the United States. (2) Reduce, or prepare to reduce, the quantity of deployed intercontinental ballistic missiles of the United States to a number less than 400. (b) Exception The prohibition in subsection (a) shall not apply to any of the following activities: (1) The maintenance or sustainment of intercontinental ballistic missiles. (2) Ensuring the safety, security, or reliability of intercontinental ballistic missiles. (3) Facilitating the transition from the Minuteman III intercontinental ballistic missile to the Sentinel intercontinental ballistic missile (previously referred to as the ground-based strategic deterrent weapon ). 1647. Limitation on availability of funds pending compliance with information requests from the Government Accountability Office Of the funds authorized to be appropriated by this Act or otherwise made available for fiscal year 2024 for Operation and Maintenance, Defense-wide, and available for the Office of the Under Secretary of Defense for Policy, not more than 35 percent may