Keeping the weapons clean
GRISSOM AIR RESERVE BASE, Ind., -- Senior Airman Jacob Johnston, 434th Security Forces Squadron, cleans an M4 carbine rifle equipped with PAQ-4 infra-red laser and M68 close combat optic and active flashlight, following weapons training during a unit training assembly. (U.S. Air Force photo/Staff Sgt. Mark R.W. Orders-Woempner)