In this photo provided by the Southwest Photo Bank, former U.S. Rep. Gabrielle Giffords and husband, former astronaut Mark Kelly, watch the Space Shuttle Endeavor fly over Tucson, Ariz.

 

              In this photo provided by the Southwest Photo Bank, former U.S. Rep. Gabrielle Giffords and husband, former astronaut Mark Kelly, watch the Space Shuttle Endeavor fly over Tucson, Ariz.
In this photo provided by the Southwest Photo Bank, former U.S. Rep. Gabrielle Giffords and husband, former astronaut Mark Kelly, watch the Space Shuttle Endeavor fly over Tucson, Ariz. on its way to Los Angeles, Thursday, Sept. 20, 2012. Kelly, Endeavour's last commander, requested that the shuttle pass over Tucson to honor Giffords, who is recovering after suffering a head wound in a shooting rampage last year. (AP Photo/Southwest Photo Bank, P.K. Weis) MANDATORY CREDIT