Prelaunch - Apollo 10

S69-35315 (18 May 1969) --- The Apollo 10 crew leaves the Kennedy Space Center's Manned Spacecraft Operations Building during the Apollo 10 prelaunch countdown. Leading is astronaut John W. Young, command module pilot, followed by astronauts Thomas P. Stafford, commander; and Eugene A. Cernan, lunar module pilot. The transfer van carried them over to Pad B, Launch Complex 39, where their spacecraft awaited them. Liftoff for the lunar orbit mission was at 12:49 p.m. (EDT), May 18, 1969.