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Students from Arapahoe High Scool gather outside the school after being evacuated in Centennial, Colorado, on December 13.
Students from Arapahoe High Scool gather outside the school after being evacuated in Centennial, Colorado, on December 13.

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    Student: "Knew this wasn't a drill"

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Student: "Knew this wasn't a drill"

A witness to the high school shooting in Colorado today talks about his harrowing experience.

Student: "Knew this wasn't a drill"

A witness to the high school shooting in Colorado today talks about his harrowing experience.