GT-9 TEST – Training

S66-33407 (10 May 1966) --- Astronauts Thomas P. Stafford (right foreground), command pilot; and Eugene A. Cernan, pilot, prepare to enter the Gemini-9 spacecraft in the white room atop Pad 19 during a Gemini-9/Agena simultaneous launch demonstration. This test is a coordinated countdown of the Atlas-Agena and the Gemini-Titan vehicles. NASA and McDonnell Aircraft Corporation personnel stand by to assist with the insertion of the astronauts into the spacecraft. Photo credit: NASA