That they often pose as POWs or Navy SEALs ("oooh!") and tell incredible stories of hardship and death, all completely fictitious, to reporters or classrooms full of wide-eyed students?
That they frequent gun shows and Army/Navy stores to find medals and accoutrements and claim to have received all kinds of nifty medals for merit and valor and whatnot, and even go so far as to apply for and receive Purple Heart license plates, which don't appear to require any kind of background check in some states?
That there are groups of actual veterans devoted to tracking down the impostors and publically shaming them on crazy investigative websites?
Well, there are. And quite a few of 'em, too.
Color me amazed.