People attend the "Made In America" music festival in Philadelphia on Sunday, Sept. 2, 2012. (Photo by Charles Sykes/Invision/AP)

Associated Press
People attend the "Made In America" music festival in Philadelphia on Sunday, Sept. 2, 2012. (Photo by Charles Sykes/Invision/AP)
People attend the "Made In America" music festival in Philadelphia on Sunday, Sept. 2, 2012. (Photo by Charles Sykes/Invision/AP)
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