JSC2000-07460 (11 December 2000) --- Astronaut Scott J. Horowitz, STS-105 mission commander, floats in a small life raft during an emergency egress training session at the Neutral Buoyancy Laboratory (NBL) near the Johnson Space Center (JSC). This summer, Horowitz will join four other astronauts and two cosmonauts for a mission to the International Space Station (ISS).