Video: TSA's John Pistole on the top 3 risks to aviation security

TSA Administrator John Pistole discusses what he views as the top three risks to aviation security in the U.S. with Fox News’ Catherine Herridge at the Aspen Security Forum on July 24, 2014. To view this interview in its entirety, please visit http://aspensecurityforum.org/media/live-video/.

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