JSC2011-E-043705 (29 April 2011) --- NASA astronauts Chris Ferguson, STS-135 commander; Doug Hurley, pilot; Sandy Magnus and Rex Walheim, both mission specialists; along with crew instructors are pictured during an ingress/egress timeline training session in the Space Vehicle Mock-up Facility at NASA's Johnson Space Center. Photo credit: NASA
Photographer Bill Stafford-NASA-JSC
Date April 29, 2011