S65-27487 (14 May 1965) --- The prime crew for Gemini-Titan 4 spaceflight is shown walking up the ramp toward the elevator at Pad 19 during a wet mock simulation exercise. Purpose of the exercise was to prepare for the scheduled flight of GT-4 on June 3, 1965. Astronaut James A. McDivitt (lead man) is command pilot for the GT-4 mission. Astronaut Edward H. White II (behind McDivitt) is pilot for the mission.