S88-52187 (22 Nov 1988) --- Five astronauts pause from their training schedule to pose for a photograph. Pictured, left to right, are astronauts David M. Walker, mission commander; Mark C. Lee, Mary L. Cleave, Ronald J. Grabe and Norman E. Thagard. They are on the middeck section of the Shuttle mission simulator (fixed base) in the Johnson Space Center's mission simulation and training facility.