This column begins with your periodic reminder that In Real Life, I teach high school English. I often teach Tim O'Brien's novel "The Things They Carried," as a whole or in pieces, including the chapter "How to Tell a True War Story." I've been thinking a lot about that story lately, as NBC anchor Brian Williams, Bill O'Reilly, and even Wisconsin Governor Scott Walker have all been in the news lately for telling untrue war (or "war") stories.