US Air Force AIRMAN First Class Joseph Moos, a Security Forces troops with the 731st Munitions Support Squadron, Araxos Air Base, Greece, does a visual security check before allowing entry to the Monitoring Facility. His primary duty is Monitor Facility Operator where he is responsible for maintaining remote security over the Hardened Aircraft Shelters. The 731st MSS is a Geographically Separated Unit (GSU) assigned to USAFE (United States Air Forces in Europe). (Duplicate image, see also DF-SD-01-01705 or search 000725-F-9629J-001)