Evan Todd still has sharp memories of April 20, 1999. As a sophomore at Columbine High School, he was in the library with his friends on that cool, sunny morning, attempting to write a paper but really just goofing off, throwing around wads of paper.
In an instant everything changed. Todd described an explosion, smoke, and then pops of gunfire echoing through the hallways. He felt a rush of adrenaline as panic set in around him.