Buzz Aldrin and Ted Freeman. (via, via)
This looks like it was taken in October 1964:
On Friday, October 30, Ted Freeman and Buzz Aldrin were engaged in a little public affairs activity for NASA, demonstrating their spacesuits and a mock-up of the Gemini spacecraft for a few members of the press.
However, Freeman would never fly a Gemini mission:
On October 31, 1964, Theodore Freeman was killed when a goose smashed through the cockpit canopy of his T-38 Talon jet trainer. Flying shards of Plexiglas entered the jet engine intake and caused the engine to flameout. Freeman ejected from the stricken aircraft, but was too close to the ground for his parachute to open properly.
Buzz Aldrin went on to be the second man on the Moon.