The Apollo Saturn 501 spacecraft undergoes checkout in test stand within the Kennedy Space Center's Manned Spacecraft Operations Building in preparation.

The Apollo/Saturn 501 spacecraft undergoes checkout in test stand within the Kennedy Space Center’s Manned Spacecraft Operations Building in preparation for the first flight of NASA’s Saturn V space vehicle in the second quarter of this year. The command module, top, was mated to the service module, and both were joined to the Spacecraft Lunar Module Adapter, the type that eventually will house a Lunar Module. The first Saturn V flight will be unmanned.