I started interviewing combat veterans as a part of this study, I discussed some of the psychological theories concerning the trauma of combat with one crusty old sergeant. He laughed scornfully and said, “Those bastards don’t know anything about it. They’re like a world of virgins studying sex, and they got nothing to go on but porno movies. And it is just like sex, ’cause the people who really do it just don’t talk about it.”

