; and (2) in paragraph (8)(C), relating to temporary adjustments in rates of basic allowance for housing for localities where actual housing costs differ from current rates of basic allowance for housing by more than 20 percent, by striking September 30, 2023 and inserting December 31, 2024 . 624. Requirement to establish remote and austere condition assignment incentive pay program for Air Force The Secretary of the Air Force shall— (1) evaluate the Remote and Austere Condition Assignment Incentive Pay program of the Army; and (2) not later than October 1, 2025, establish a similar program for the Air Force, unless the Secretary can certify to Congress that there are no critically manned units at any Air Force installation in Alaska. 625. Extension of travel allowance for members of the Armed Forces assigned to Alaska Section 603(b)(5)(B) of the James M. Inhofe National Defense Authorization Act for Fiscal Year 2023 ( Public Law 117–263 ; 136 Stat. 2621) is amended by striking December 31, 2023 and inserting June 30, 2024 . C Other Matters 631. Modification of requirements for approval of foreign employment by retired and reserve members of uniformed services Section 908 of title 37, United States Code, is amended— (1) in subsection (b)— (A) by striking A person and inserting (1) A person ; (B) by inserting after determining that such approval is not contrary to the national interests of the United States after approve the employment ; and (C) by adding at the end the following new paragraph: (2) The Secretary of a military department may delegate the determination of the Secretary required by paragraph (1) only to an official of the military department at or above the level of an Assistant Secretary or, in the event of a vacancy in the position of such an official, a civilian official performing the duties of that position. ; and (2) in subsection (d)— (A) in paragraph (2)— (i) in the matter preceding subparagraph (A), by striking an officer and inserting a person