JSC2000-04073 (12 May 2000) --- Astronaut William Shepherd (bottom left), Expedition One mission commander, and cosmonaut Yuri Gidzenko, Soyuz commander, lie on couches on the mid deck of a Johnson Space Center trainer during a rehearsal of shuttle descent. Cosmonaut Sergei Krikalev, the third Expedition One crew member, is not yet positioned on his couch. He will serve as flight engineer for the crew. Next to him is astronaut Andrew S.W. Thomas, who assisted in the shuttle-descent simulation in one of the Johnson Space Center's Crew Compartment Trainers (CCT).