Sergeant James Norman, an instructor 10th Marine Regiment’s Artillery Assistant Gunners and Gunners Course, teaches the functions of a gunner’s quadrant Nov. 6, 2015, at Marine Corps Base Camp Lejeune, N.C. The month-long course trains Marines to transition from basic field artillery cannoneers to assistant gunners and gunners within their gun sections. - Sergeant James Norman, an instructor 10th Marine Regiment’s Artillery Assistant Gunners and Gunners Course, teaches the functions of a gunner’s quadrant Nov. 6, 2015, at Marine Corps Base Camp Lejeune, N.C. The month-long course trains Marines to transition from basic field artillery cannoneers to assistant gunners and gunners within their gun sections.