Oh man...those guys are my favorites...believe me, it is all show, no action...the best way to deal with a guy like that is to wait till he is good and drunk and he is talking much shit..Go up to him and say "man. I dont want no problems" then when he drops his guard you clock him as hard as you can, and again, and again, and again. till the blood is flowing. That usually puts them in check for awhile. Those kind of military guys were my prey when I was a Marine. Cause I never drank, but they love to talk shit and I love to finish it. LOL