STS-135 crew and training team during CCT-II PRL Ingress/Egress training.

STS-135 crew and training team during CCT-II PRL Ingress/Egress training. Photo Date: May 24, 2011. Location: Building 9NW - CCTII Mockup. Photographer: Robert Markowitz

JSC2011-E-050002 (24 May 2011) --- NASA astronaut Chris Ferguson, STS-135 commander, attired in a training version of the shuttle launch and entry suit, prepares for an ingress/egress training session in a shuttle mock-up (out of frame) in the Space Vehicle Mock-up Facility at NASA's Johnson Space Center. Photo credit: NASA

Photographer ROBERT MARKOWITZ