S96-14344 (13 Sept. 1996) --- In the Johnson Space Center's weightless environment training facility, astronaut Jerry M. Linenger, STS-81 mission specialist, prepares for an underwater simulation of a contingency space walk. Linenger, attired in a training version of the Extravehicular Mobility Unit (EMU ) will utilize the nearby 25-ft. deep pool, in which he will be able to achieve a neutrally buoyant state.