The tall man in an immaculate business suit looked across the crowded classroom at more than a hundred young faces. He was an imposing figure, over six feet tall and broad of shoulder. Yet he spoke with a quiet gentleness that captivated the children. At the back of the room stood an impatient cameraman from the local TV station. He had come to interview a rare hero, a living Medal of Honor recipient. It seemed, however, that Peter Lemon was more interested in talking to the children than in...