STS-135 (335) crew during Water Ops training with instructor Rob Tomaro

JSC2010-E-170902 (1 Oct. 2010) --- NASA astronaut Sandy Magnus and Rex Walheim, both STS-135 mission specialists, participate in a training session on the middeck of the crew compartment trainer (CCT-2) in the Space Vehicle Mock-up Facility at NASA's Johnson Space Center. STS-135 is planned to be the final mission of the space shuttle program. Photo credit: NASA or National Aeronautics and Space Administration