Giffords and thirteen others wounded, federal judge and six others killed in attack in Tucson

Democratic Representative of Arizona Gabrielle Giffords was shot in the head today outside a supermarket in Tucson where she was meeting with constituents for a "Congress on Your Corner" event.  The attack killed six people including US District Judge John Roll and a young child and injured thirteen including Rep. Giffords.  The alleged shooter has been identified as Jared Loughner, and police are looking for a possible accomplice in the attack.  Rep. Giffords has come out of surgery, and the surgeon is "optimistic about recovery".