Billie Joe Armstrong of Green Day performs at the iHeart Radio Music Festival on Friday, Sept., 21, 2012 at the MGM Grand Arena in Las Vegas. (Photo by Eric Reed/Invision/AP)

Associated Press
Billie Joe Armstrong of Green Day performs at the iHeart Radio Music Festival on Friday, Sept., 21, 2012 at the MGM Grand Arena in Las Vegas. (Photo by Eric Reed/Invision/AP)
Billie Joe Armstrong of Green Day performs at the iHeart Radio Music Festival on Friday, Sept., 21, 2012 at the MGM Grand Arena in Las Vegas. (Photo by Eric Reed/Invision/AP)
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