Columbine assault raged, students fought to keep a wounded teacher alive.

As the Columbine assault raged, students barricaded a classroom and fought to keep a wounded teacher alive. - By Dave Cullen - Slate Magazine: "Dave Sanders was just a few feet from safety when the first shot hit him. He saw the killers, spun around, and ran for the corner, trying to save a few more students on the way there. One bullet got him in the back. It tore through his rib cage and exited through his chest.