A sign is seen at the memorial outside the offices of congresswoman Gabrielle Giffords in Tucson, Ariz., on Jan. 11, 2011. On Jan. 8, a gunman shot Giffords and 18 other people at an outside event in Tucson; six of those shot died. Giffords survived despite her severe head wound. A 22-year-old local man was arrested; his motive was unclear. A judge later found him incompetent to stand trial.