JSC2010-E-196897 (20 Dec. 2010) --- While seated at the commander's station, NASA astronaut Chris Ferguson, STS-135 commander, participates in a post insertion/de-orbit training session on the flight deck of the crew compartment trainer (CCT-2) in the Space Vehicle Mockup Facility at NASA's Johnson Space Center. Ferguson is wearing a training version of his shuttle launch and entry suit. STS-135 is planned to be the final mission of the space shuttle program. Photo credit: NASA or National Aeronautics and Space Administration