; and (2) the congressional intelligence committees (as defined in section 3 of the National Security Act of 1947 ( 50 U.S.C. 3003 )). 1609. Limitation on availability of certain funds relating to selection of permanent location for headquarters of United States Space Command (a) Limitation on availability of funds for military construction projects None of the funds authorized to be appropriated by this Act or otherwise made available for fiscal year 2024 for the Air Force may be obligated or expended for a military construction project (as described in section 2801(b) of title 10, United States Code) for the construction or modification of facilities for temporary or permanent use by the United States Space Command for headquarters operations until the report required under subsection (c) is submitted. (b) Limitation on availability of funds for travel expenditures Of the funds authorized to be appropriated by this Act or otherwise made available for fiscal year 2024 to the Office of the Secretary of the Air Force for travel expenditures, not more than 50 percent may be obligated or expended until the report required under subsection (c) is submitted. (c) Report The Secretary of the Air Force shall submit to the congressional defense committees a report on the justification for the selection of a permanent location for headquarters of the United States Space Command. B Nuclear forces 1611. 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 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