iMove to our sort of "get to know your fellow Narnians" section -- better fit than VDT/roleplay or Duffers.
I trained a Navy Seal to scuba dive once! It was hilarious -- he had gotten out of the Navy but never had taken a course in recreational scuba diving, so he didn't have a certification card to show dive shops when he wanted to get an air refill or go on a dive trip! So he took my class -- he was an excellent diver (naturally!) and he was a fun kid, too. After his class got certified, we were making a dive together, and one of the other students' fin strap broke; he just took off his fin and gave it to the other guy and did the dive with one fin like a dolphin. Excellent guy.