December 18, 2013 12:00 AM

Tighter gun checks needed as active shooter rate rises

The day before the nation marked the one-year anniversary of the mass killing in Newtown, Mass., another school shooting was unfolding in Centennial, Colo. It was only 8 miles from Columbine High School, site of a 1999 mass shooting.

Related content

Suggested for you



Editor's Choice Videos