; and (3) $895,328,000 is for Procurement. B Other Matters 1411. Authorization of appropriations for Armed Forces Retirement Home There is hereby authorized to be appropriated for fiscal year 2018 from the Armed Forces Retirement Home Trust Fund the sum of $64,300,000 for the operation of the Armed Forces Retirement Home. XV AUTHORIZATION OF ADDITIONAL APPROPRIATIONS FOR OVERSEAS CONTINGENCY OPERATIONS 1501. Purpose The purpose of this title is to authorize appropriations for the Department of Defense for fiscal year 2018 to provide additional funds for overseas contingency operations being carried out by the Armed Forces. 1502. Army procurement Funds are hereby authorized to be appropriated for fiscal year 2018 for procurement for the Army in amounts as follows: (1) For aircraft procurement, $424,686,000. (2) For missile procurement, $559,283,000. (3) For weapons and tracked combat vehicles, $1,191,139,000. (4) For ammunition procurement, $193,436,000. (5) For other procurement, $405,575,000. 1503. 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 $483,058,000. 1504. Navy and Marine Corps procurement Funds are hereby authorized to be appropriated for fiscal year 2018 for procurement for the Navy and Marine Corps in amounts as follows: (1) For aircraft procurement, Navy, $157,300,000. (2) For weapons procurement, Navy, $152,373,000. (3) For ammunition procurement, Navy and Marine Corps, $225,587,000. (4) For other procurement, Navy, $220,059,000. (5) For procurement, Marine Corps, $65,274,000. 1505. Air Force procurement Funds are hereby authorized to be appropriated for fiscal year 2018 for procurement for the Air Force in amounts as follows: (1) For aircraft procurement, $740,778,000. (2) For missile procurement, $395,400,000. (3) For space procurement, $2,256,000. (4) For ammunition procurement, $501,509,000. (5) For other procurement, $4,008,887,000. 1506. Defense-wide activities procurement