Giffords, Kelly launch gun control lobbying effort - Article Photos 5/8

Tucson police officers inspect handguns and rifles at a gun buyback event on Tuesday, Jan. 8, 2013, at the Tucson Police Department Midtown Substation in Tucson, Ariz. Gun owners relinquished their handguns and rifles in exchange for a $50 Safeway gift card on Tuesday, which marked the second anniversary of the shootings in Tucson that left six dead and 13 injured, including former Rep. Gabrielle Giffords. (AP Photo/Arizona Daily Star, Mike Christy) ALL LOCAL TV OUT; PAC-12 OUT; MANDATORY CREDIT; NO SALES; MAGS OUT