S90-54764 (7 Dec 1990) --- Astronaut Gregory J. Harbaugh, mission specialist, listens attentively as a trainer (out of frame) briefs the STS-39 crewmembers on emergency egress measures. The seven astronauts were in the Johnson Space Center's (JSC) weightless environment training facility (WET-F). This type training uses the WET-F's 25 ft. deep pool to simulate an ocean parachute landing.