Right Place, Right Time, Right Marine: The Story of the First Marine Corps Female Primary Marksmanship Instructor at Edson Range - Cpl. Barbara Cogburn, primary marksmanship instructor (PMI) with Weapons and Field Training Battalion, Marine Corps Recruit Depot San Diego, assists a Marine during a rifle qualification at Edson Range on Marine Corps Base Camp Pendleton, 1985. Cogburn, a food service specialist, became the first school-trained female PMI in 1984. PMIs act as an instructor to other Marines on how to precisely handle and fire weapon systems on small arms ranges.