Taylor Swift's has canceled three concerts in Vienna this week after a terror plot to attack the venue was uncovered. Austrian police have detained two people suspected of plotting an attack and they say they found chemicals, other substances of preparation and a pledge of allegiance to ISIS in one of the suspect's homes.
FOX’s John Saucier speaks with Bill Daly, former FBI investigator, who says it is another reminder that terrorism and attacks on the innocent remain a big threat.
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