US Air Force (USAF) AIRMAN First Class (A1C) Claudius Jeffries (left), and STAFF Sergeant (SSGT) Matthew Smith, both assigned to the 510th Fighter Squadron (FS), attach a CBU-87 1,000-pound Combined Effects Munitions (CEM) onto the wing pylon of a USAF F-16 Fighting Falcon aircraft during a monthly efficiency load evaluation exercise conducted at Aviano Air Base (AB) Italy