Why I want to join the Marines.
My cousin is in a secret branch of the Marines that studies the ancient forbidden arts of the orient. He said once you're initiated into the group and you take a secrecy vow, the first thing they teach you is how to breathe underwater. It's a long lost Chinese secret. Basically everything else they learn to do requires that skill, because when these guys are called out on missions, they have to swim around and fight people underwater and stuff.