; and (F) estimated costs for any activity associated with the strategy. (2) A plan for the implementation of the strategy, including timelines for achieving such implementation. (3) An identification of risks to such implementation, including potential delays to such timelines. (c) Limitation Of the funds authorized to be appropriated by this Act or otherwise made available for fiscal year 2024 for travel for the Office of the Under Secretary of Defense for Personnel and Readiness, not more than 93 percent may be obligated or expended until the Chief Information Officer of the Department of Defense independently certifies to the Committees on Armed Services of the House of Representatives and the Senate that the strategy under subsection (a) meets the validated requirements of the Department of Defense. 1552. Management by Department of Defense of mobile applications (a) Implementation of recommendations (1) In general The Secretary of Defense shall evaluate and implement to the maximum extent practicable the recommendations of the Inspector General of the Department of Defense with respect to managing mobile applications contained in the report set forth by the Inspector General dated February 9, 2023, and titled Management Advisory: The DoD’s Use of Mobile Applications (Report No. DODIG–2023–041). (2) Deadline The Secretary shall implement each of the recommendations specified in subsection (a) by not later than one year after the date of the enactment of this Act unless the Secretary submits to the congressional defense committees a written notification of any specific recommendation that the Secretary declines to implement or plans to implement after the date that is one year after the date of the enactment of this Act. (b) Briefing on requirements related to covered applications (1) In general Not later than 120 days after the date of the enactment of this Act, the Secretary shall provide to the congressional defense committees a briefing on actions taken by the Secretary to enforce compliance with existing