Congresswoman Shot in Arizona

Police quarantine the shopping center where U.S. Rep. Gabrielle Giffords, D-Ariz., and several others were shot during an event in front of a Safeway grocery store Jan. 8, 2011, in Tuscon. Giffords was shot in the head at a public event entitled "Congress on your Corner" when a gunman opened fire outside a Safeway grocery store.

Complete Coverage: Tragedy in Tucson

Emergency personnel and Daniel Hernandez, an intern for U.S. Rep. Gabrielle Giffords, second right, move Giffords after she was shot in the head outside a shopping center in Tucson, Ariz., on Saturday, Jan. 8, 2011.

Complete Coverage: Tragedy in Tucson

AP Photo/Arizona Daily Star, Kelly Presnell

A man sits near the scene of a shooting that involved Rep. Gabrielle Giffords, D-Ariz., on Saturday, Jan. 8, 2011, in Tucson, Ariz.

Complete Coverage: Tragedy in Tucson

Law enforcement officials speak at the scene where Rep. Gabrielle Giffords, D-Ariz., was shot in the head when an assailant opened fire outside a grocery store as the Democratic lawmaker met with constituents in Tucson, Ariz. on Saturday, Jan. 8, 2011.

Complete Coverage: Tragedy in Tucson

Police officials talk to each other at the scene at a shooting of Rep. Gabrielle Giffords, D-Ariz., Saturday, Jan. 8, 2011, at a Safeway grocery store in Tucson, Ariz.

Complete Coverage: Tragedy in Tucson

Two people embrace each other at the scene where Rep. Gabrielle Giffords, D-Ariz., and others were shot outside a Safeway grocery store in Tucson, Ariz. on Saturday, Jan. 8, 2011.

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A Pima County Sheriff's deputy speaks with a man in Tucson, Ariz., Saturday, Jan. 8, 2011 near the scene of a shooting that involved Rep. Gabrielle Giffords, D-Ariz.

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AP Photo/The Arizona Republic, David Kadlubowski

Law enforcement personnel listen to a briefing in Tucson, Ariz., Saturday, Jan. 8, 2011 near the scene of a shooting that involved Rep. Gabrielle Giffords, D-Ariz.

Complete Coverage: Tragedy in Tucson

Emergency personnel stand at the scene of a shooting that authorities claim involved Rep. Gabrielle Giffords, D-Ariz., in Tucson, Ariz., on Saturday, Jan. 8, 2011.

Complete Coverage: Tragedy in Tucson

Police search the parking lot outside a Safeway where there has been a shooting involving Rep. Gabrielle Giffords, D-Ariz., on Saturday, Jan. 8, 2011 in Tucson, Ariz.

Complete Coverage: Tragedy in Tucson

Emergency personnel work at the scene where Rep. Gabrielle Giffords, D-Ariz., and others were shot outside a Safeway grocery store in Tucson, Ariz. on Saturday, Jan. 8, 2011.

Complete Coverage: Tragedy in Tucson

People gather at the scene of a shooting involving Rep. Gabrielle Giffords, D-Ariz., on Jan. 8, 2011 in Tucson, Ariz.

Complete Coverage: Tragedy in Tucson

A firefighter sits in the back of an ambulance at the scene where Rep. Gabrielle Giffords, D-Ariz., and others were shot Saturday, Jan. 8, 2011, at a Safeway grocery store in Tucson, Ariz.

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Police guard the entrance to University Medical Center in Tucson, Ariz. on Saturday, Jan. 8, 2011 where U.S. Rep. Gabrielle Giffords, D-Ariz, was sent after she was shot outside a Safeway grocery store.

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Gia, center, Georgia, left, and John Cobb, of Tucson, embrace outside the office of Congresswoman Gabrielle Giffords after Giffords was shot Saturday, Jan. 8, 2011, at a grocery store in Tucson, Ariz.

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Emergency personnel use a stretcher to carry a shooting victim outside a shopping center in Tucson, Ariz. on Saturday, Jan. 8, 2011 where U.S. Rep. Gabrielle Giffords, D-Ariz., and others were shot as the congresswoman was meeting with constituents.

Complete Coverage: Tragedy in Tucson

Emergency personnel attend to a shooting victim outside a shopping center in Tucson, Ariz. on Saturday, Jan. 8, 2011 where U.S. Rep. Gabrielle Giffords, D-Ariz., and others were shot as the congresswoman was meeting with constituents.

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House Speaker John Boehner reenacts the swearing in of Rep. Gabrielle Giffords, D-Ariz., on Capitol Hill in Washington, Jan. 5, 2011. Authorities say that Giffords was shot in the head on Saturday, Jan. 8, 2011 while meeting with constituents in her district in the area around Tucson.

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In this April 3, 2006 file photo, Arizona Federal District Judge John McCarthy Roll appears before the Senate Judiciary Committee on Capitol Hill to discuss immigration litigation reduction. Roll was fatally shot Saturday, Jan. 8, 2011 in the attack on Rep. Gabrielle Giffords of Arizona.

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This photo obtained from the 2006 Mountain View High School yearbook shows Jared L. Loughner. U.S. Rep. Gabrielle Giffords of Arizona was shot in the head Saturday when an assailant opened fire outside a grocery store during a meeting with constituents, killing at least five people. Police say that Jared L. Loughner has been taken into custody in conjunction with the shooting incident. A neighbor provided this photo to an Associated Press photographer outside a listed address for a Jared L. Loughner, where police are gathering, and said that this person lived at the residence.

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AP Photo/Arizona Daily Star, Mamta Popat

This March 2010 photo shows a man identified as Jared L. Loughner at the 2010 Tucson Festival of Books in Tucson, Ariz. The Arizona Daily Star, a festival sponsor, confirmed from their records that the subject's address matches one under investigation by police after a shooting in Tucson that left U.S. Rep. Gabrielle Giffords wounded and at least five others dead. Police say a suspect is in custody, and he was identified by people familiar with the investigation as Jared Loughner, 22, of Tucson.

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Flowers and candles are seen placed outside the office of Rep. Gabrielle Giffords after Giffords was shot in the head by a gunman who opened fire outside a grocery store, Saturday, Jan. 8, 2011, in Tucson, Ariz.

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Candles, flowers and signs are shown outside the offices of U.S. Rep. Gabrielle Giffords, D-Ariz., during a candlelight vigil for Giffords Saturday, Jan. 8, 2011 in Tucson, Ariz. Giffords was shot in the head earlier in the day during a speech at a local supermarket.

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President Barack Obama pauses during a statement on the shooting of Rep. Gabrielle Giffords, D-Ariz.,at the White House on Saturday, Jan, 8, 2011, in Washington. Giffords is in critical condition after being shot in the head in her district in Arizona Saturday.

Complete Coverage: Tragedy in Tucson

A lone bunch of flowers lays on the floor near the Capitol Hill office of Rep. Gabrielle Giffords, D-Ariz., Saturday, Jan. 8, 2011, on Capitol Hill in Washington. Giffords was shot in the head Saturday in her district in Arizona.

Pima County Sheriff Clarence Dupnik speaks at a news conference, Saturday, Jan. 8, 2011, in Tucson, Ariz. Rep. Gabrielle Giffords of Arizona was shot in the head Saturday by a gunman who opened fire outside a grocery store during a meeting with voters, killing a federal judge and five others in a rampage that rattled the country and left politicians fearful for their safety.

Complete Coverage: Tragedy in Tucson

Matt Richardson lights a candle during a vigil for the victims of a shooting in Arizona, at the steps of Capitol Hill in Washington, on Saturday Jan. 8, 2011. Rep. Gabrielle Giffords of Arizona was shot in the head Saturday by a gunman who opened fire outside a grocery store during a meeting with voters, killing a federal judge and five others in a rampage.

Complete Coverage: Tragedy in Tucson

Mike Scionti, of Tucson, places flowers outside the offices of U.S. Rep. Gabrielle Giffords, D-Ariz., during a candlelight vigil for Giffords Saturday, Jan. 8, 2011 in Tucson, Ariz. Giffords was shot in the head earlier in the day during a speech at a local supermarket.

Complete Coverage: Tragedy in Tucson

David Kadlubowski,AP Photo/The Arizona Republic

People gather outside University Medical Center for a prayer vigil for Rep. Gabrielle Giffords, Saturday, Jan. 8, 2011 in Tucson, Ariz. Rep. Gabrielle Giffords of Arizona was shot in the head Saturday by a gunman who opened fire outside a grocery store during a meeting with voters, killing a federal judge and four others in a rampage that rattled the country and left politicians fearful for their safety.

Complete Coverage: Tragedy in Tucson

AP Photo/The Arizona Republic, Michael Chow

Well-wishers pay their respects at a makeshift memorial outside U.S. Rep. Gabrielle Giffords' office in Tucson, Ariz. Sunday, Jan. 9, 2011. A gunman targeting Giffords opened fire outside a Safeway in Tucson on Saturday, killing six people.

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The American flag flies at half-staff on the U.S. Capitol in Washington, Sunday, Jan. 9, 2011. In a brief statement Sunday morning, House Speaker John Boehner said flags on the House side of the Capitol in Washington will be flown at half-staff to honor the slain aide, Gabe Zimmerman, of Rep. Gabrielle Giffords, D-Ariz. Thirty-year-old Zimmerman was among six killed Saturday in a Tucson, Ariz., shooting rampage that left the Democratic congresswoman among 13 wounded.

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From left, Ellie Steve, 6, Lucia Reeves, 6, and Zoe Reeves, 18, gather for a candlelight vigil outside the offices U.S. Rep. Gabrielle Giffords, D-Ariz., in Tucson, Ariz., Sunday, Jan. 9, 2011. Giffords was critically wounded during a shooting at a political event Saturday in Tucson.

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AP Photo/The Arizona Republic, Mark Henle

The home of Jared Loughner, at 7741 N Soledad Ave., Sunday, Jan. 9, 2011, in Tucson, Ariz. Loughner is accused of attempting to assassinate Rep. Gabrielle Giffords and killing six other people Saturday, Jan. 8, 2011, during a "Congress on your Corner" event at a mall in Tucson, Ariz.

Complete Coverage: Tragedy in Tucson