Air Force Good Conduct Medal, awarded to Airmen for exemplary conduct during a three-year period of active military service, (or for a one-year period of service during a time of war).Air Force Good Conduct Medal, awarded to Airmen for exemplary conduct during a three-year period of active military service, or for a one-year period of service during a time of war. (U.S. Air Force graphic/Air Force News Agency)