S71-41409 (26 July 1971) --- Astronaut David R. Scott, commander of the Apollo 15 lunar landing mission, goes through suiting up operations in the Kennedy Space Center's (KSC) Manned Spacecraft Operations Building (MSOB) during the Apollo 15 prelaunch countdown. Minutes later astronauts Scott; Alfred M. Worden, command module pilot; and James B. Irwin, lunar module pilot, rode a special transport van over to Pad A, Launch Complex 39, where their spacecraft awaited them. The Apollo 15 space vehicle was launched at 9:34:00:79 a.m. (EDT), July 26, 1971.