JSC2011-E-060141 (29 June 2011) --- NASA astronauts Sandy Magnus and Chris Ferguson practice setup of an exercise ergometer as the crew of STS-135 trains in the Crew Compartment Trainer (CCT) mock-up at NASA?s Johnson Space Center in Houston June 29, 2011. The training marked the crew's final scheduled session in the Space Vehicle Mock-up Facility. Photo credit: NASA Photo/Houston Chronicle, Smiley N. Pool