S86-25254 (January 1986) --- Payload specialists in training for STS-51L take a break in shuttle emergency egress training at the Johnson Space Center's (JSC) Shuttle Mock-up and Integration Laboratory. Left to right are Gregory Jarvis of Hughes, Sharon Christa McAuliffe and Barbara Morgan of the Teacher-in-Space Project. McAuliffe was selected as NASA's first citizen observer in the Space Shuttle Program and Morgan was named her backup. The photo was taken by Keith Meyers of the New York Times. EDITOR?S NOTE: The STS-51L crew members lost their lives in the space shuttle Challenger accident moments after launch on Jan. 28, 1986 from the Kennedy Space Center (KSC). Photo credit: NASA

S86-25183 (for release January 1986) --- Sharon Christa McAuliffe, STS-51L payload specialist representing the Teacher-in-Space Project, descends from a mock-up of the space shuttle using a sky-genie device during an emergency training session in the Johnson Space Center?s (JSC) Shuttle Mock-up and Integration Laboratory. The photograph was taken by Keith Meyers of the New York Times. EDITOR?S NOTE: The STS-51L crew members lost their lives in the space shuttle Challenger accident moments after launch on Jan. 28, 1986 from the Kennedy Space Center (KSC). Photo credit: NASA

STS 51-E crew is briefed on the Shuttle full fuselage trainer. Astronauts Dave Griggs (foreground), Jean Loup Chretien (behind Griggs) and Jeff Hoffman are being shown the workings of the trainer by flight instructors.

Sharon Christa McAuliffe, 51-L payload specialist representing the Teacher in Space project, jumps down onto a cushion during an emergency egress training session in JSC's mockup and integration laboratory. She had been descending from the mockup using a Sky-genie.

STS 51-E crew is briefed on the Shuttle full fuselage trainer. View of the crewmembers seated at stations inside the cabin was taken from the side hatch.

S85-31933 (17 May 1985) --- Four members of the STS 51-G crew participate in a training exercise in the shuttle mission simulation and training facility at the Johnson Space Center. Steven R. Nagel, left foreground, is a mission specialist for the flight, while Sultan Salman Abdelazize Al-Saud (right foreground) is a payload specialist. In the background are astronauts Daniel C. Brandenstein (left) in the commander's station and John O. Creighton in the pilot's position. Photo credit: NASA/ Otis Imboden of National Geographic

Mission Specialist Shannon W. Lucid, STS 51-G, descends from the top of the crew compartment trainer in bldg 9A, the mockup and integration laboratory, during emergency egress training.