; and (ii) by striking , for the period of time described in subsection (b), ; (B) by redesignating subsection (c) as subsection (b); and (C) in subsection (b) (as so redesignated) by striking , United States Code . (2) Table of sections The table of sections at the beginning of such chapter is amended by inserting after the item relating to section 464 the following new item: 465. Authority to require the occupation of quarters on a rental basis while performing official travel. . (3) Repeal of pilot program Section 914 of the Carl Levin and Howard P. Buck McKeon National Defense Authorization Act for Fiscal Year 2015 ( 5 U.S.C. 5911 note) is repealed. X General provisions 1001. Refueling and complex overhaul of USS John C. Stennis (a) Refueling and complex overhaul The Secretary of the Navy may carry out the nuclear refueling and complex overhaul of the USS John C. Stennis (CVN–74). (b) Use of incremental funding With respect to any contract entered into under subsection (a) for the nuclear refueling and complex overhaul of the USS John C. Stennis, the Secretary may use incremental funding for a period not to exceed six years after advance procurement funds for such nuclear refueling and complex overhaul effort are first obligated. (c) Condition for out-Year contract payments Any contract entered into under subsection (a) shall provide that any obligation of the United States to make a payment under the contract for a fiscal year after fiscal year 2020 is subject to the availability of appropriations for that purpose for that later fiscal year. 1002. Reduction in the minimum number of Navy carrier air wings and carrier air wing headquarters required to be maintained Section 5062(e) of title 10, United States Code, is amended by striking paragraphs (1) and (2) and inserting the following new paragraphs: (1) the Navy maintains a minimum of 9 carrier air wings until the date on which additional operationally deployable aircraft carriers can fully support a 10th carrier air wing on a long-term sustainable basis