Dressed in camouflage fatigues, the two boys waited in the woods behind the school until the lunch hour, when one of them ran into the hallway and triggered a fire alarm. As classmates and teachers filed out of the buildings Mitchell Johnson, 13, and Andrew Golden, 11, opened fire with high-powered rifles stolen from Golden's grandfather. By the time the last shot was fired four girls and an English teacher, who had attempted to shield the children from the barrage, were dead. What happened in Jonesboro that day in 1998 awakened America to the terror of school shootings and left...