to align Air Force fighter force structure with National Defense Strategy and reports (a) Required submission of strategy Not later than March 1, 2020, the Secretary of the Air Force shall submit to the congressional defense committees a fighter force structure acquisition strategy that is aligned with the results of the reports submitted under subtitle D of title I of the National Defense Authorization Act for Fiscal Year 2018 ( Public Law 115–91 ) and the Air Force's stated requirements to meet the National Defense Strategy. (b) Alignment with strategy The Secretary of the Air Force may not deviate from the strategy submitted under subsection (a) until— (1) the Secretary receives a waiver and justification from the Secretary of Defense