U.S. Air Force Capt. Walt Coombs, 35th Fighter Squadron pilot, briefs Republic of Korea Air Force pilots from the 123rd Tactical Fighter Squadron, Seosan Air Base, at Kunsan Air Base, ROK, during Exercise Buddy Wing 15-4, June 4, 2015. In an effort to enhance U.S. and ROKAF combat capability, Buddy Wing exercises are conducted multiple times throughout the year on the peninsula to sharpen interoperability between the allied forces so that if need be, they are always ready to fight as a combined force. (U.S. Air Force photo by Staff Sgt. Nick Wilson/Released)