A 628th Security Forces Squadron Combat Arms Training and Maintenance instructor, tallies up the number of bullets that hit the targets during an M-4 carbine qualifying session at night at the CATM firing range, Feb. 11, 2015, on Joint Base Charleston Air Base, S.C. Airmen fire more than 200 rounds during the course and are required to accomplish this course annually. (U.S. Air Force photo/ Senior Airman Dennis Sloan)