Columbine 20 years later: Families talk life after tragedy (Part 2)

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"I'm not gonna say I'm over it, because truth be told, I'll never be over it,” Sean Graves, who was shot six times, says. “But I don't wanna focus on the dark side." The families impacted by the tragedy tell NBC’s Joe Fryer that their focus is on honoring the 13 lives lost.