Mission Specialist (MS) Ride adjusts headset (HDST) on middeck

STS007-11-495 (18-24 June 1983) --- Astronaut Sally K. Ride, STS-7 mission specialist, communicates with ground controllers from the mid deck of the Earth-orbiting Space Shuttle Challenger. She has just opened one of the large lockers during the operation and monitoring of the continuous flow electrophoresis system (CFES) experiment at left edge. This photograph was made with a 35mm camera.