Officer, US Navy, Submarines.
Pros: See the world, amazing people work for you/with you, no-cost security clearance, got payed to attend college, in charge of a 4 billion dollar machine, operate a nuclear reactor, use a periscope, shoot torpedoes, shoot tomahawks, job security, standing OOD at sunrise in the middle of the pacific with dolphins chasing down the side of the boat smoking a cigar with your lookout.
CONS!!!: 9 months away from home, 60 days underwater, regulators up your ass, terrible bosses, no sleep for 65 hours, living space smaller than a coffin, divorce rate at 80%, pulling in to a foreign port and having to work all 5 days you're there, using the damned periscope, having 30 degree water leak onto your head for 45 minutes while using the damned periscope, pitching and rolling, no chicks, no alcohol underway, captain up your ass, being in charge of a 4 billion dollar machine, having to treat the awesome people that work for you like children, shift work for 5 months in port, radiation, insane paperwork, shore tour = Iraq, field day, ORSE, working in an organization rooted in the past that is loathe to make changes to support this generation and the next.
Holy shit, man. But the dolphins make up for it, right?