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Student Storms Arapahoe High School With Shotgun Looking for Teacher

Colorado high school senior Karl Pierson targeted school librarian in recent school shooting.
12/14/2013

Transcript for Student Storms Arapahoe High School With Shotgun Looking for Teacher

We have more details on the school shooting in colorado on friday. Eerie flashback to columbine. We know more about his arsenal, the intended target. And the heroism in the midst of this crisis.... See More
This transcript has been automatically generated and may not be 100% accurate.
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