S69-39270 (10 July 1969) --- Astronaut Edwin E. Aldrin Jr., lunar module pilot of the Apollo 11 lunar landing mission, participates in lunar extravehicular activity training under weightlessness conditions aboard a U.S. Air Force KC-135 jet aircraft from nearby Patrick Air Force Base. Aldrin is wearing an Extravehicular Mobility Unit, the type of equipment which he will wear on the lunar surface.