Astronauts Neil A. Armstrong (front) and Edwin E. Aldrin Jr. walk across the mobile launcher to enter their Apollo 11 spacecraft. Along with them is Joe Schmidt, a suit technician from Johnson Space Center. Not shown is the third member of the crew, astronaut Michael Collins. Liftoff of Apollo 11 is scheduled at 9:32 a.m. EDT from Pad 39A, which will begin man's first lunar landing mission.