S90-41500 (Aug 1990) --- Astronaut Donald R. McMonagle checks communication gear on his extravehicular mobility unit (EMU) spacesuit as he prepares to be lowered into a 25-ft. deep pool at the Johnson Space Center's weightless environment training facility (WET-F). McMonagle was preparing to participate in the simulation of a contingency extravehicular activity (EVA) for the mission, scheduled for Discovery in the spring of 1991.