; and (iii) the cost to develop and produce new anti-personnel landmine munitions if the Secretary determines such munitions are necessary to meet the demands of operational plans. (C) An assessment by the Chairman of the Joint Chiefs of Staff of the adequacy of the inventory levels projected under subparagraph (B)(i) to meet operational requirements. (D) Any other matters that the Secretary determines appropriate for inclusion in the report. (2) Form of report The report required by paragraph (1) shall be submitted in unclassified form, but may include a classified annex. (d) Briefing required (1) In general Not later than 180 days after the date of the enactment of this Act, the Secretary of Defense shall provide to the congressional defense committees a briefing on the status, as of the date of the briefing, of research and development into operational alternatives to anti-personnel landmine munitions. (2) Form of briefing The briefing required by paragraph (1) may contain classified information. (e) Anti-personnel landmine munitions defined In this section, the term anti-personnel landmine munitions includes anti-personnel landmines and submunitions, as defined by the Convention on the Prohibition of the Use, Stockpiling, Production and Transfer of Anti-Personnel Mines and on their Destruction, concluded at Oslo September 18, 1997, as determined by the Secretary. 1051. Limitation on availability of funds for travel expenses of Office of the Secretary of Defense until submission of certain plans Of the funds authorized to be appropriated by this Act for fiscal year 2024 for operation and maintenance, Defense-wide, and available for the Office of the Secretary of Defense for travel expenses, not more than 80 percent may be obligated or expended until the Secretary of Defense submits— (1) the implementation plan required by section 1087(b) of the National Defense Authorization Act for Fiscal Year 2023 ( Public Law 117–263 ; 136 Stat. 2802