WIKIARCHIVES.SPACE

An interior view of the Soyuz orbital module mock-up in Building 35 during Apollo-Soyuz Test Project joint crew training at NASA's Johnson Space Center. The two ASTP crewmen are looking over a checklist. They are astronaut Thomas P. Stafford (left), commander of the American ASTP prime crew; and cosmonaut Aleksey A. Leonov, commander of the Soviet ASTP first (prime) crew. The training session simulated activity on the second day in Earth orbit.