STS-135 crew during Rendezvous Training session in Building 16 dome

JSC2011-E-028150 (23 March 2011) --- NASA astronauts Doug Hurley, STS-135 pilot; and Sandy Magnus (foreground), mission specialist, participate in an exercise in the systems engineering simulator in the Avionics Systems Laboratory at NASA's Johnson Space Center. Photo credit: NASA or National Aeronautics and Space Administration