NASA Photo ID: S79-31075
Date taken: unknown
Astronauts John W. Young, left, and Robert L. Crippen, crewmen for the first space transportation system (STS-1) mission, go over a checkoff list during simulations in the Johnson center's Shuttle mission simulator in the mission simulation and training facility. Young will be crew commander and Crippen, pilot, for the mission--Shuttle's initial orbital flight test.
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