I'm going to have to side with Cutter; I, too, had a huge problem with the framing of the story. It didn't make a whole lot of sense that this would be a speech given to a school. I have had my fair amount of Vietnam vets come speak at my schools, and a few even went into details of the deaths that they seen and even caused. However, that is nowhere near the same magnitude of what this man did. He passively murdered many, many civilian innocents, which cannot be brushed away as just an outcome of the horrors of war. The story itself was alright, but the framing killed it for me.
Actually, the story did bother me a bit, in that I wanted him to be punished for being weak and letting so many people die when all he had to do was not bite down. In fact, him rescuing that one boy and his family actually infuriated me; it allowed him a release from his responsibilities. He could look back at all the death and illness he rained upon nations and see this one instance of mercy he decided to act out upon and go, "Hey, I wasn't so bad now, was I? Look what I risked to save this poor, freckled boy." Granted, that may have been the point of this story - this character doesn't seem like someone I'd want to pity or feel compassion towards, and since I left feeling disgusted with him, mission successful?