U.S. Air Force Airmen fire M-4 Carbines at targets during training at the combat arms training and maintenance range at Joint Base Langley-Eustis, Va., Jan. 23, 2018. While at CATM, military and civilian personnel learn how to fire a weapon, as well as learn the internals of their weapons and how to clean them properly. (U.S. Air Force photo by Airman 1st Class Tristan Biese)