FILE - Rep. Gabrielle Giffords, left, leads the Pledge of Allegiance accompanied by her husband, former astronaut Mark Kelly, at the start of a one year memorial vigil for the victims and survivors of the shooting that wounded Giffords, 12 others and killed six in this Sunday, Jan. 8, 2012 file photo taken in Tucson, Ariz. The three-year anniversary of the shooting of Gabrielle Giffords will be marked Wednesday Jan. 8, 2013 with bell-ringing, flag-raising and other ceremonies, providing a moment of reflection for the former congresswoman. Giffords and Kelly plan to mark the anniversary privately with friends and other survivors of the attack. (AP Photo/Matt York, File)