Ferguson and Walheim on Atlantis Aft Flight Deck during Rendezvous OPS

S135-E-007155 (10 July 2011) –-- NASA astronauts Chris Ferguson (left), STS-135 commander, and Rex Walheim, mission specialist, are pictured on the aft flight deck of the space shuttle Atlantis prior to docking with the International Space Station during the mission’s third day in space. Photo credit: NASA