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In this image released by the White House, Navy Capt. Mark Kelly hugs his wife Rep. Gabrielle Giffords, D-Ariz., after he received the Legion of Merit from Vice President Joe Biden during Kelly's retirement ceremony in the Secretary of War Suite in the Eisenhower Executive Office Building on the White House complex in Washington, Thursday, Oct. 6, 2011. (AP Photo/The White House, David Lienemann)

Gabrielle Giffords

Authorities released hundreds of pages of documents on March 27 that provide new insight into how the 2011 Arizona shooting occurred and the motivations behind gunman Jared Loughner. Six people were killed in the attack and several people, including then-Rep. Gabrielle Giffords were seriously injured. (AP)