Staff Sgt. Matthew Marquart, 51st Security Forces Squadron combat arms instructor, marks a target to assist a student in zeroing his weapon during a new and improved qualification course at the combat arms range at Osan Air Base, Republic of Korea, Jan. 31, 2013. CATM cadres teach anywhere from 50-100 Airmen a week during the course which covers weapon safety, maintenance and operation. The instructor team is made up of only six Airmen. (U.S. Air Force photo/Airman 1st Class Alexis Siekert)
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