the multipurpose crew vehicle necessary to fulfill the International Space Station crew rescue function. 51703. Commercial Crew Program (a) Objective The objective of the Commercial Crew Program shall be to assist in the development and certification of commercially provided transportation that— (1) can carry United States government astronauts (meaning a United States government astronaut as defined in section 50902 of this title, except it does not include an individual who is an international partner astronaut) safely, reliably, and affordably to and from the International Space Station