2011: A week into her third term, U.S. Rep. Gabrielle Giffords, D-Ariz., is shot by Jared Lee Loughner at a supermarket near Tucson, Ariz., where she was meeting publicly with constituents. Giffords is critically injured by a gunshot wound to the head, with 12 others injured and six killed in the shooting, including federal judge John Roll, Gifford staffer Gabe Zimmerman and 9-year-old Christina-Taylor Green. Giffords would later be brought to a rehabilitation facility in Houston, Texas, where she recovered some of her ability to walk, speak, read and write. She resigned from office in January 2012 to focus on her recovery. Loughner would initially be found incompetent to stand trial based on a diagnosis of paranoid schizophrenia but was eventually judged competent after treatment. He pleaded guilty to 19 counts and in November 2012 was sentenced to life in prison.