S91-37294 (May 1991) --- Astronauts Michael A. Baker, left, and John E. Blaha, STS-43 pilot and mission commander, respectively, suit up for a session of emergency egress training at the Johnson Space Center's Shuttle Mockup and Integration Laboratory. Bill Todd, a crew escape equipment suit technician for Boeing, assits them. The two astronauts are wearing the orange partial pressure suits which are used by Shuttle crewmembers during launch and entry phases of their flights.