CAPE CANAVERAL, FL - MAY 12: Space shuttle Endeavour commander Mark Kelly (L-R) along with crew members Greg Chamitoff, Andrew Feustel, Roberto Vittori, Michael Fincke and pilot Gregory Johnson pose for a photograph after their arrival at Kennedy Space Center on May 12, 2011 in Cape Canaveral, Florida. Commander Kelly's wife, congresswoman Gabrielle Giffords, who was shot in the head at a meet-and-greet in her hometown of Tucson, Arizona, plans on attending the launch. Space shuttle Endeavour is scheduled to launch on its final flight to the space station on May 16th. (Photo by Joe Raedle/Getty Images)