A student in the Martial Arts Instructor Course grapples with Staff Sgt. Roger Nelson, the chief instructor of the course, during a training session at Marine Corps Base Camp Lejeune, N.C., Dec. 4, 2015. The three-week long course will qualify its students to be Martial Arts instructors. The course’s development of endurance, strength, fighting ability and knowledge will benefit Marines for future operations in any location. (U.S. Marine Corps photo by Cpl. Paul S. Martinez/Released) - A student in the Martial Arts Instructor Course grapples with Staff Sgt. Roger Nelson, the chief instructor of the course, during a training session at Marine Corps Base Camp Lejeune, N.C., Dec. 4, 2015. The three-week long course will qualify its students to be Martial Arts instructors. The course’s development of endurance, strength, fighting ability and knowledge will benefit Marines for future operations in any location. (U.S. Marine Corps photo by Cpl. Paul S. Martinez/Released)