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This close-up view of the space shuttle Endeavour's three main engines was provided by an Expedition 27 crew member during a survey of the approaching STS-134 vehicle prior to docking with the International Space Station. As part of the survey and part of every mission's activities, Endeavour performed a back-flip for the rendezvous pitch maneuver (RPM). The station crew member used a digital still camera with an 800mm focal length, as the two spacecraft were approximately 600 feet (180 meters) apart.