Federal agents investigate an apparent bomb explosion at the Social Security Administration office on Marshall Street in downtown Casa Grande, Ariz. on Friday, Nov. 30, 2012. No one was hurt in the ... more 
Federal agents investigate an apparent bomb explosion at the Social Security Administration office on Marshall Street in downtown Casa Grande, Ariz. on Friday, Nov. 30, 2012. No one was hurt in the explosion. (AP Photo/Casa Grande Dispatch, Oscar Perez) less 
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Associated Press | Photo By Casa Grande Dispatch, Oscar Perez
Mon, Dec 3, 2012 6:17 PM EST