"Being aware of these things I think is so important," he says. "I remember a fighter who had been highly competitive wrestler and he was going to fight in a big organization ... He's kind of blown me off a little bit." A new guy that was showing up on deployment would be scared, but they don't know what it feels like because they've jumped out of airplanes or scuba-dived the night before. They're used to being afraid and they don't, they don't feel fear anymore,. So then almost something get knots in their stomach, their heart rates going.