Article Photos: Officials talk guns, hold buybacks after shootings 2/11

Tucson police officers catalog a gun outside a police station in Tucson, Ariz. Tuesday, Jan 8, 2013 during Tucson City Councilman Steve Kozachik's gun buyback program, asking people to turn in their guns for a $50 gift certificate to a grocery store. Tuesday marked the second anniversary of when  a gunman opened fire on former Rep. Gabrielle Giffords as she met with constituents in 2011, killing six people and leaving 12 others injured. (AP Photo/Brian Skoloff)