defense activities National nuclear security administration Weapons Activities For Department of Energy expenses, including the purchase, construction, and acquisition of plant and capital equipment and other incidental expenses necessary for atomic energy defense weapons activities in carrying out the purposes of the Department of Energy Organization Act ( 42 U.S.C. 7101 et seq.), including the acquisition or condemnation of any real property or any facility or for plant or facility acquisition, construction, or expansion, $10,000,071,000, to remain available until expended: Provided , That of such amount, $105,600,000 shall be available until September 30, 2019, for program direction. Defense nuclear nonproliferation For Department of Energy expenses, including the purchase, construction, and acquisition of plant and capital equipment and other incidental expenses necessary for defense nuclear nonproliferation activities, in carrying out the purposes of the Department of Energy Organization Act ( 42 U.S.C. 7101 et seq.), including the acquisition or condemnation of any real property or any facility or for plant or facility acquisition, construction, or expansion, $1,852,310,000, to remain available until expended: Provided , That none of the funds provided under this heading, or in prior Acts that remain unobligated, shall be available for construction of Project 99–D–143, Mixed Oxide Fuel Fabrication Facility. Naval reactors For Department of Energy expenses necessary for naval reactors activities to carry out the Department of Energy Organization Act ( 42 U.S.C. 7101 et seq.), including the acquisition (by purchase, condemnation, construction, or otherwise) of real property, plant, and capital equipment, facilities, and facility expansion, $1,436,651,000, to remain available until expended: Provided , That of such amount, $44,100,000 shall be available until September 30, 2019, for program direction. Federal salaries and expenses For expenses necessary for Federal Salaries and Expenses in the National