$2,423,608,000. (4) For ammunition, $1,879,283,000. (5) For other procurement, $6,469,331,000. 102. Joint Improvised-Threat Defeat Fund Funds are hereby authorized to be appropriated for fiscal year 2018 for the Joint Improvised-Threat Defeat Fund in the amount of $14,442,000. 103. Navy and Marine Corps Funds are hereby authorized to be appropriated for fiscal year 2018 for procurement for the Navy and Marine Corps as follows: (1) For aircraft, $15,056,235,000. (2) For weapons, including missiles and torpedoes, $3,420,107,000. (3) For ammunition procurement, Navy and Marine Corps, $792,345,000. (4) For shipbuilding and conversion, $19,903,682,000. (5) For other procurement, $8,277,789,000. (6) For procurement, Marine Corps, $2,064,825,000. 104. Air Force Funds are hereby authorized to be appropriated for fiscal year 2018 for procurement for the Air Force as follows: (1) For aircraft, $15,430,849,000. (2) For missiles, $2,296,182,000. (3) For space procurement, $3,370,775,000. (4) For ammunition, $1,376,602,000. (5) For other procurement, $19,603,497,000. 105. Defense-wide activities Funds are hereby authorized to be appropriated for fiscal year 2018 for Defense-wide procurement in the amount of $4,835,418,000. 106. Defense Production Act purchases Funds are hereby authorized to be appropriated for fiscal year 2018 for purchases under the Defense Production Act of 1950 ( 50 U.S.C. 4501 et seq.) in the amount of $37,401,000. B Air Force Programs 111. Procurement authority for certain parts of intercontinental ballistic missile fuzes (a) Availability of Funds Notwithstanding section 1502(a) of title 31, United States Code, of the amount authorized to be appropriated for fiscal year 2018 by section 103 for Missile Procurement, Air Force, $6,334,000 shall be available for the procurement of covered parts pursuant to contracts entered into under section 1645(a) of the Carl Levin and Howard P. Buck McKeon National Defense Authorization Act for Fiscal Year 2015 ( Public Law 113–291