JSC2011-E-050061 (24 May 2011) --- NASA astronauts Sandy Magnus and Rex Walheim, both STS-135 mission specialists, attired in training versions of the shuttle launch and entry suit, participate in an ingress/egress training session in a shuttle mock-up in the Space Vehicle Mock-up Facility at NASA's Johnson Space Center. Photo credit: NASA
Photographer ROBERT MARKOWITZ
Date May 24, 2011