A mass shooting at Florida State University's Tallahassee campus killed two and injured six. Here's what we know as of ...

But Columbine didn't happen in a vacuum. When two suicidal killers shot Lance outside the high school cafeteria early in a massacre ... traumatic stress might loom beneath his carefree exterior.

Tallahassee police responded to reports of a shooting at The Artisan but found no victims or shooters, just "ballistic damage on the exterior ... bombing at Columbine High School in Colorado.