JSC2007-E-21201 (1 May 2007) --- Astronaut Rex J. Walheim (left) and European Space Agency (ESA) astronaut Hans Schlegel, STS-122 mission specialists, enjoy a light moment as they await the start of an emergency egress training session in the Space Vehicle Mockup Facility at Johnson Space Center. Walheim and Schlegel are wearing training versions of their shuttle launch and entry suits.
Photographer James Blair