 If you get selected at A&S, then you didn't go to pre-dive. And then after pre-dive, which is five or six weeks, something like that, then you go to dive school. It's still running six minute or less miles, just getting drowned in a pool, doing 50 meter underwater and doing stuff with tanks and getting knots tied in the air hose to where you've got to take the tanks off and you've got to unfoul. And this is, you've got a blacked out mask and all that kind of stuff. They're trying to stress inoculate you is what they're trying to do. Because if the first time I ever got tested mentally, I panicked and it happened to be underwater, more likely I'm going to die. And the team that I'm with, I'm endangering them. So I need to be able to handle stress at different levels and be able to still react and operate in somewhat of a calm fashion and be able to problem solve and work through that whatever the issue is that's going on.