A teacher and coach for 25 years, Dave Moore carefully unfolds a small white paper from his wallet to reveal a single handwritten word: "COLUMBINE."

Though Littleton, Colo., is more than 1,100 miles from this small, low-crime community west of Knoxville, Moore looks at the paper every day as a somber reminder that he is a "teacher of life" to the 965 students at Tennessee's Lenoir City High School.

He vows that Columbine will

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