I used to think that stuff like that Just Didn't Happen. And if it did, it would come out in the public, 'cause you just can't keep a secret.
In my last stint at Microsoft, my roommate was an ex-special forces guy from the Gulf War. He always had this far-off look, like he was remembering something that caused him a lot of pain, and he would sometimes start crying for no obvious reason. When Sept 11 happened, he really started freaking out, and made some cryptic comments about some kind of covert action he was in during the Gulf War - and even dropped some hints it was U.S. on Allies attack to justify certain actions that were taken.
When his emotions calmed down, he clammed up, and refused to talk any more about it. I didn't push either...