US Air Force (USAF) STAFF Sergeant (SSGT) Stephen Glass (left), Combat Arms Instructor, 347th Security Forces Squadron (SFS), Moody Air Force Base (AFB), Georgia (GA), shows USAF SENIOR AIRMAN (SRA) Richard Tovar the detailed process to disassemble and reassemble a FNMI 7.62 mm M240B (heavy) machine gun. SRA Tovar is learning this prior to going to attend the two-month long Combat Arms Instructor course at the training school at Lackland AFB, Texas (TX)