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NYPD's Miller on why WDBJ shooter was a "clas...

John Miller, New York City's deputy police commissioner for intelligence and counterterrorism, joins “CBS This Morning” to discuss how Vester Lee Flanagan II, also known as Bryce Williams, exhibited text-book behaviors in the deadly shooting of a WDBJ news crew in Virginia. Miller is a former assistant FBI director and CBS News’ former senior correspondent.
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