"When you're down there, it is just you," Hunter-Reay says of his dives. "I'm totally alone and everything shuts off. There is nothing else in my life." Achieving this sort of clarity is important for Hunter-Reay, not only because he makes his living in fleeting moments, but because he's the sort of guy who "lies awake at night just bouncing between thoughts." In diving, he's learned to be both alone and present, accountable for his actions and deliberate in determining his course.

"The only other time I feel like that is when I'm racing a car," he says.