Corporal Elvis Nunez (left), a squad leader in 3rd Battalion, 6th Marine Regiment, shows Cpl. Vergil Johnson (middle), a tank crewman in 2nd Tank Battalion, and Cpl. Rickey Anspach Jr., an intelligence specialist in 8th Marine Regiment, how to apply principle direction of fire while conducting defensive operations at The Staff Non-Commissioned Officerâ€™s Academy on Camp Johnson, N.C., June 22. The course is the first in a series of professional military education classes at the academy that provides Marines with leadership training to enhance their professional qualifications as they take on greater responsibility.