Endeavor lands
A vapor trail follows space shuttle Endeavour as it approaches Runway 15 on the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida for the final time. Endeavour landed June 1, 2011, at 2:35 a.m. EDT, wrapping up the STS-134 mission. During the 16-day mission, Commander Mark Kelly and crew delivered the Alpha Magnetic Spectrometer to the International Space Station. (NASA photo/Chuck Tintera)