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S92-45750 (1 Sept 1992) --- Astronaut John H. Casper, mission commander, assigned to fly aboard the Space Shuttle Endeavour for the STS-54 mission, gets in some rehearsal time at JSC's Shuttle mockup and integration facility. Part of a spacesuit is visible at lower right. Two STS-54 crewmembers will spend four-plus hours wearing extravehicular mobility units (EMU) for a planned spacewalk in a continuing evaluation program for EVA techniques and gear for Space Station Freedom.
