The first book, [u]Rogue Warrior[/u], purports to be non-fiction. [u]Red Cell[/u],[u]Green Team[/u],[u]Task Force Blue[/u], and [u]Designation Gold[/u] all are written as fiction. All of his books were written "with John Weisman", whatever that means.
[u]Rogue Warrior[/u] was a good read (in fact, I'm currently reading it again) although it jumps around a lot, chronologically. [u]Red Cell[/u] was also good, but from there on, the series started to get [i]very[/i] formulaic, and some of the stuff in there is out-and-out wrong. (Hooking up an encrypted phone to an unencrypted phone line will not, in fact, blow out all of the normal phones in the house because encrypted data is somehow more powerful than clear audio). By the last book, it seems like he's making up for lack of plot by swearing more, or something.
-BP