; (ii) the NASA 2014 Strategic Plan; (iii) the Aeronautics Strategic Implementation Plan; and (iv) any updates to the programs called for in the plans described in clauses (i) through (iii); and (3) a level of funding that adequately supports large-scale piloted flight test experimentation and validation, including related infrastructure, should be ensured over a sustained period of time to restore the capacity of NASA— (A) to see legacy priority programs through to completion; and (B) to achieve national economic and security objectives. (b) Statement of policy It is the policy of the United States— (1) to maintain world leadership in— (A) military and civilian aeronautical science and technology; (B) global air power projection; and (C) industrialization; and (2) to maintain as a fundamental objective of NASA aeronautics research the steady progression and expansion of flight research and capabilities, including the science and technology of critical underlying disciplines and competencies, such as— (A) computational-based analytical and predictive tools and methodologies; (B) aerothermodynamics; (C) propulsion; (D) advanced materials and manufacturing processes; (E) high-temperature structures and materials; and (F) guidance, navigation, and flight controls. (c) Establishment and continuation of X-Plane projects (1) In general The Administrator shall establish or continue to implement, in a manner that is consistent with the roadmap for supersonic aeronautics research and development required by section 604(b) of the National Aeronautics and Space Administration Transition Authorization Act of 2017 ( Public Law 115–10 ; 131 Stat. 55), the following projects: (A) A low-boom supersonic aircraft project to demonstrate supersonic aircraft designs and technologies that— (i) reduce sonic boom noise; and (ii) assist the Administrator of the Federal Aviation Administration in enabling— (I) the safe commercial deployment of civil supersonic aircraft technology