Taken on May 17, this photo of Rep. Gabrielle Giffords (left) and her mother, Gloria Giffords, was posted on her Facebook page on June 12. P.K. Weis/Facebook.com/GabrielleGiffords hide caption

itoggle caption P.K. Weis/Facebook.com/GabrielleGiffords

May 28, 2008, file photo: Space shuttle Discovery commander Mark Kelly, right, gestures as he walks with his twin brother astronaut Scott Kelly, left, and mission specialist Ron Garan, after arrival at Kennedy Space Center in Cape Canaveral, Fla. Terry Renna/AP hide caption

itoggle caption Terry Renna/AP

A makeshift memorial outside the University Medical Center in Tucson includes candles and this photo of Rep. Gabrielle Giffords with supporters. John Moore/Getty Images hide caption

itoggle caption John Moore/Getty Images