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This video image provided by House Television shows Rep. Gabrielle Giffords, D-Ariz. and House Speaker John Boehner of Ohio, on the floor of the House on Capitol Hill in Washington, Wednesday, Jan. 25, 2012. Giffords resigned from the House on Wednesday amid tears, tributes and standing ovations, more than a year after she was gravely wounded by a would-be assassin. (AP Photo/House Television)

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)