S68-40875 (5 July 1968) --- Astronaut John W. Young, Apollo 7 backup command module pilot, ingresses Apollo Spacecraft 101 Command Module during simulated altitude runs at the Kennedy Space Center's Pad 34.

ALTITUDE SIMULATION APOLLO 7 FLIGHT APOLLO PROJECT APOLLO SPACECRAFT ASTRONAUTS COMMAND MODULES CREWS FLORIDA KENNEDY SPACE CENTER TRAINING LAUNCHING PADS SIMULATION

Astronaut John Young ingresses Apollo spacecraft command module in training