Colorado High School Shooting: 80 Seconds of Horror

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Colorado High School Shooting: 80 Seconds of Horror

Colorado High School Shooting: 80 Seconds of Horror
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Colorado High School Shooting: 80 Seconds of Horror

by ABC News Videos 2:22 mins

Colorado High School Shooting: 80 Seconds of Horror

by ABC News Videos 2:22 mins

A look at how students escaped Colorado high school so quickly.