On duty, U.S. Navy Seaman Chris Mesnard, a 22-year-old corpsman with Headquarters and Service Company, 3rd Battalion, 3rd Marine Regiment, from Omaha, Neb., tends to sick and injured Marines at the battalion aid station, and helps a senior corpsman with administrative duties. When he has down time, he trains in mixed martial arts with the goal of competing in the Ultimate Fighting Championship. “Training to fight isn’t only the best thing I can do in my down time here,” Mesnard said. “It’s the only thing I want to do. This definitely isn’t the ideal place to train, but I’ve learned to make the best with what I have. All I need is a few pieces of equipment to use, and to break a sweat.”