; and other procurement items for the reserve components of the Armed Forces, $1,300,000,000, to remain available for obligation until September 30, 2021: Provided , That the Chiefs of National Guard and Reserve components shall, not later than 30 days after enactment of this Act, individually submit to the congressional defense committees the modernization priority assessment for their respective National Guard or Reserve component: Provided further , That none of the funds made available by this paragraph may be used to procure manned fixed wing aircraft, or procure or modify missiles, munitions, or ammunition. Defense production act purchases For activities by the Department of Defense pursuant to sections 108, 301, 302, and 303 of the Defense Production Act of 1950 ( 50 U.S.C. 4518 , 4531, 4532, and 4533), $68,578,000, to remain available until expended. IV Research, development, test and evaluation Research, development, test and evaluation, army For expenses necessary for basic and applied scientific research, development, test and evaluation, including maintenance, rehabilitation, lease, and operation of facilities and equipment, $10,108,108,000 (increased by $5,000,000) (reduced by $5,000,000) (increased by $5,000,000), to remain available for obligation until September 30, 2020. Research, development, test and evaluation, navy For expenses necessary for basic and applied scientific research, development, test and evaluation, including maintenance, rehabilitation, lease, and operation of facilities and equipment, $17,658,244,000, to remain available for obligation until September 30, 2020: Provided , That funds appropriated in this paragraph which are available for the V–22 may be used to meet unique operational requirements of the Special Operations Forces. Research, development, test and evaluation, air force For expenses necessary for basic and applied scientific research, development, test and evaluation, including maintenance, rehabilitation, lease, and operation of facilities and equipment,