"I started riding motorcycles when I was 5, and started racing off-road at age 12. The military came much later. I was undergoing a long rehab for a physical injury when a friend, who I guess was impressed by the intensity I showed in my recovery, gave me what's called a BUD/S Warning Order. This is basically a challenge, on paper, to see if you've got what it takes to be a Navy SEAL. It really struck a chord in me.