Las Vegas Sun

April 19, 2014

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During a briefing Saturday, Dec. 14, 2013, at Arapahoe High School in Centennial, Colo., Arapahoe County Sheriff Grayson Robinson holds a picture of Claire Davis, the 17-year-old student who was shot by Karl Pierson at the school on Friday.

Ed Andrieski / Associated Press

During a briefing Saturday, Dec. 14, 2013, at Arapahoe High School in Centennial, Colo., Arapahoe County Sheriff Grayson Robinson holds a picture of Claire Davis, the 17-year-old student who was shot by Karl Pierson at the school on Friday.