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)

FILE - In this Wednesday, March 6, 2013 file photo, former U.S. Rep. Gabrielle Giffords smiles as she raises a fist pump to the crowd as she, husband Mark Kelly, and a number of other Tucson mass shooting victims returned to the site of the shooting in Tucson, Ariz., that left her critically wounded to urge key senators to support expanded background checks for gun purchases. Giffords has been named this year's recipient of the John F. Kennedy Profile in Courage award. The JFK Library and Museum announced Friday that the Arizona Democrat is being honored for the "political, personal, and physical courage she has demonstrated in her fearless public advocacy for policy reforms aimed at reducing gun violence." (AP Photo/Ross D. Franklin, File)

Former Rep. Gabrielle Giffords, center, is joined by her husband Mark Kelly, left, and Emily Nottingham, mother of shooting victim Gabe Zimmerman, listening to a speaker as they returned to the site of a shooting that left her critically wounded to urge key senators to support expanded background checks for gun purchases, Wednesday, March 6, 2013, in Tucson, Ariz. (AP Photo/Ross D. Franklin)

Former Rep. Gabrielle Giffords, center, looks at a photo of Christina-Taylor Green, as it is held by her mother Roxanna Green, left, as Giffords' husband Mark Kelly prepares to speak as they all returned to the site of a shooting that left her critically wounded, and many others killed, including the nine-year-old Green, to urge key senators to support expanded background checks for gun purchases, Wednesday, March 6, 2013, in Tucson, Ariz. (AP Photo/Ross D. Franklin)

This undated image provided by Vogue shows former Rep. Gabrielle Giffords, D-Ariz., left, with her husband, former astronaut Mark Kelly, during a photo shoot at their home in Tucson, Ariz. The image and accompanying article by John Powers will be published in the March 2013 issue of Vogue, available on newsstands nationwide on Feb. 19. (AP Photo/Norman Jean Roy for Vogue)

Former Democratic Rep. Gabrielle Giffords, left, and her husband Mark Kelly leave after the sentencing of Jared Loughner, in back of U.S. District Court Thursday, Nov. 8, 2012, in Tucson, Ariz. U.S. District Judge Larry Burns sentenced Jared Lee Loughner, 24, to life in prison, for the January 2011 attack that left six people dead and Giffords and others wounded. Loughner pleaded guilty to federal charges under an agreement that guarantees he will spend the rest of his life in prison without the possibility of parole. (AP Photo/Ross D. Franklin)

Former Democratic Rep. Gabrielle Giffords, left, and her husband Mark Kelly leave after the sentencing of Jared Loughner, in back of U.S. District Court Thursday, Nov. 8, 2012, in Tucson, Ariz. U.S. District Judge Larry Burns sentenced Jared Lee Loughner, 24, to life in prison, for the January 2011 attack that left six people dead and Giffords and others wounded. Loughner pleaded guilty to federal charges under an agreement that guarantees he will spend the rest of his life in prison without the possibility of parole. (AP Photo/Ross D. Franklin)

Former Rep. Gabrielle Giffords, left, waves with Democratic National Committee Chairwoman Rep. Debbie Wasserman Schultz, from Florida, after reciting the Pledge of Allegiance the Democratic National Convention in Charlotte, N.C., on Thursday, Sept. 6, 2012.(AP Photo/Lynne Sladky)

In an election to fill former Rep. Gabrielle Giffords, left, D-Ariz., congressional seat, Democratic candidate Ron Barber, right, celebrates a victory with Giffords and supporters at a post election event, Tuesday, June 12, 2012, in Tucson, Ariz. Gabrielle Giffords' former district director, in a special election for the seat Giffords left in January to focus on her recovery from a gunshot wound to her head during a gunman's shooting spree a year earlier.(AP Photo/Ross D. Franklin, pool)

In an election to fill former Rep. Gabrielle Giffords, left, D-Ariz., congressional seat, Democratic candidate Ron Barber, right, celebrates a victory with Giffords and supporters at a post election event, Tuesday, June 12, 2012, in Tucson, Ariz. Gabrielle Giffords' former district director, in a special election for the seat Giffords left in January to focus on her recovery from a gunshot wound to her head during a gunman's shooting spree a year earlier.(AP Photo/Ross D. Franklin, pool)

In an election to fill former Rep. Gabrielle Giffords, D-Ariz., congressional seat, Democratic candidate Ron Barber, right, celebrates a victory with Giffords, left, as he gives her a hug prior to speaking to supporters at a post election event, Tuesday, June 12, 2012, in Tucson, Ariz. Gabrielle Giffords' former district director, in a special election for the seat Giffords left in January to focus on her recovery from a gunshot wound to her head during a gunman's shooting spree a year earlier.(AP Photo/Ross D. Franklin, pool)

In an election to fill former Rep. Gabrielle Giffords, D-Ariz., congressional seat, Democratic candidate Ron Barber, right, celebrates a victory with Giffords, left, as he gives her a hug prior to speaking to supporters at a post election event, Tuesday, June 12, 2012, in Tucson, Ariz. Gabrielle Giffords' former district director, in a special election for the seat Giffords left in January to focus on her recovery from a gunshot wound to her head during a gunman's shooting spree a year earlier.(AP Photo/Ross D. Franklin, pool)

Simon Wiesenthal Center's Annual National Tribute Dinner Honoring Jerry Bruckheimer

BEVERLY HILLS, CA - MAY 23: Congresswoman Gabrielle Giffords and husband astronaut Mark Kelly attend the Simon Wiesenthal Center's Annual National Tribute Dinner Honoring Jerry Bruckheimer at The Beverly Hilton Hotel on May 23, 2012 in Beverly Hills, California. (Photo by Valerie Macon/Getty Images)

Gabrielle Giffords Walks Thru The Capitol After Resigning As House Representative (D-AZ)

WASHINGTON, DC - JANUARY 25: Former U.S. Rep. Gabrielle Giffords (C) is excorted down the hall by Rep. Debbie Wasserman Schultz (D-FL) after she resigned from the House of Representatives on Capital Hill on January 25, 2012 in Washington, DC. Giffords resigned from Congress to focus on her recovery from a gunshot wound to the head she received last year from a lone gunman in Arizona. (Photo by Mark Wilson/Getty Images)