The Seabees of Naval Mobile Construction Battalion 74 can really pack a punch.
When they catch a break from ops in the Helmand Province of Afghanistan, they focus on hand-to-hand and close-quarters combat techniques taught in the Marine Corps Martial Arts Program.
Two Seabees endured three months of gruelling, accelerated training to become instructors. One is EA2 Erik Kennerson, who wants to award at least 18 tan belts before rotating this summer. You can read about their efforts here.
The tan belt requires two hours of training a day, four days a week. Students learn punches, throws, chokes, weapons of opportunity and knife /bayonet techniques.
So you better think twice before you try to take that bulldozer for a joyride.