S75-21720 (14 Feb. 1975) --- Astronaut Alan L. Bean (foreground) and cosmonaut Aleksey A. Leonov participate in Apollo-Soyuz Test Project joint crew training in Building 35 at NASA's Johnson Space Center. They are in the Apollo Command Module trainer. The training session simulated activities on the first day in Earth orbit. Bean is the commander of the American ASTP backup crew. Leonov is the commander of the Soviet ASTP first (prime) crew.