S90-41497 (Aug 1990) --- Astronaut Gregory J. Harbaugh, STS-39 mission specialist, completes suiting up process for a training exercise in the weightless environment training facility (WET-F) at the Johnson Space Center (JSC). Harbaugh and fellow crewmembers are using JSC's WET-F facility to participate in simulations of contingency extravehicular activity (EVA) for the flight.