Barnett built the book based on a presentation he developed when he worked at the Pentagon (The book details in hilarious fashion the importance of PowerPoint briefings inside the Pentagon), and he has given a version of this talk in many other forums. If you haven't read the book, you should watch the video below, because its basically a condensed version of the book.
Yeah,
Fiasco pokes some fun at this practice, and it's particularly embarassing in the context of the Iraq War. There's a lot of intelectual shoddiness in the military and defense dept. these days, it's one of the reasons I'm relunctant to pursue a military career myself.