Mission Commander Mark Kelly (L) waves after making remarks to the media next to Pilot Greg H. Johnson after the crew of space shuttle Endeavour's mission STS-134 arrived at the Kennedy Space Center in Cape Canaveral, Florida April 26, 2011. Launch of Endeavour is scheduled for April 29, with Kelly's wife, US Rep. Gabrielle Giffords, expected to view the launch at the Kennedy Space Center. She was injured in a shooting in Arizona in January.[Photo/Agencies]