; (2) though hypersonic flight technologies are likely to be applied to enhance defense systems in the near-term, in the long-term, application of such technologies may expand to include improved access-to-space capabilities that benefit NASA; and (3) NASA maintains specialized facilities and experts who will focus on research areas that explore challenges in hypersonic flight. (b) Policy In carrying out the Hypersonic Technology project, NASA should focus research and development efforts on high-speed propulsion systems, reusable vehicle technologies, high-temperature materials, and systems analysis. (c) Authorized funding Subject to the availability of appropriations, the Administrator shall make available at least $30,000,000 for fiscal year 2019 for the Hypersonic Technology project. V Commercial 501. Commercial supply of space products (a) In general Subchapter II of chapter 501 of title 51, United States Code, is amended by adding at the end the following: 50117. Commercial supply of space products (a) In general In planning and carrying out space exploration missions, the Administrator shall, to the greatest extent practicable, prioritize the acquisition and use of space products provided by a United States commercial provider or through a public-private partnership with a United States commercial provider. (b) Space product defined In this section, the term space product means a tangible good, including a finished good, or commodity, including a propellant, water, oxygen, or gas, that— (1) is required for space exploration activities