Gabrielle Giffords shooting in Arizona

Daniel Hernandez had been an intern for U.S. Rep. Gabrielle Giffords for only five days before she was shot at an event on Jan. 8. Hernandez rushed to Giffords’ side and applied pressure to her head wound and held her in his lap until paramedics arrived.   (Gina Ferazzi / Los Angeles Times)

Perris Murillo,11, of Tucson, left, and his brother Easin,10, say a prayer for shooting victims during a memorial in front of University Medial Center. Six people were killed and 14 injured at a Congress on the Corner event held by U.S. Rep. Gabrielle Giffords (D-Ariz.).  (Gina Ferazzi / Los Angeles Times)

Photographs of Rep. Gabrielle Giffords, who was shot, and Judge John Roll, who was slain, are part of a makeshift memorial at the University of Arizona Medical Center for victims of a shooting rampage in Tucson.  (Gina Ferazzi / Los Angeles Times)

Yesenia Alvarez of Tucson becomes emotional during a prayer service for the victims of the Jan. 8 shooting rampage.  (Gina Ferazzi / Los Angeles Times)

Leticia Alarcon and grandson Isaiah Williams,11, join a prayer vigil at the Old Pima County Courthouse for victims of the Jan. 8 attack on U.S. Rep. Gabrielle Giffords at a Tucson shopping center.  (Gina Ferazzi / Los Angeles Times)

FBI agents scan a brick wall on the side of the Safeway grocery store as they processed the site where it is believed that shooting suspect Jared Lee Loughner opened fire in Tucson on Jan. 8.  (Gina Ferazzi / Los Angeles Times)