Gemini-Titan (GT)-10 - Weightlessness Training - Wright-Patterson AFB, OH

S66-28770 (1 April 1966) --- Astronaut Michael Collins, prime crew pilot of the Gemini-10 spaceflight, undergoes zero-gravity egress training aboard a KC-135 Air Force plane. The plane, flying a parabolic curve, creates a weightless environment as a training exercise in preparation for spaceflight. Photo credit: NASA