to the availability of appropriations for such purpose, of the funds authorized to be appropriated by this Act or otherwise made available for fiscal year 2018 for research, development, test, and evaluation, defense-wide, $200,000,000 shall be available to the Under Secretary to allocate to the military departments, the defense agencies, and the combatant commands to carry out the program established under subsection (a). (2) Limitation Not more than half of the amounts made available under paragraph (1) may be allocated as described in such paragraph until the Under Secretary— (A) develops the strategic plan required by section 219(a)(2)(A) of the National Defense Authorization Act for Fiscal Year 2017 ( Public Law 114–328