MINOT AIR FORCE BASE, N.D. -- 5th Security Forces Squadron combat arms training and maintenance instructors teach CATM students on the proper use of an M249 light machine gun at the CATM site on Minot Air Force Base, N.D., Feb. 1, 2017. CATM instructors are security forces personnel who train military members on the proper use of firearms. To qualify on a firearm at CATM, every student must be able to break down and rebuild the firearm before using it on the firing range. (U.S. Air Force photos/Airman 1st Class Alyssa M. Akers)