Col. Ahn Duk Sin, 29th Tactical Fighter Wing Group commander, coins Osan Air Base’s superior performers from exercise Max Thunder at Gwangju Air Base, Republic of Korea, May 18, 2012. The bilateral training involved approximately 60 U.S. Air Force and ROKAF aircraft, and roughly 320 Airmen from Osan, Kunsan, Daegu, Cheongju and Seosan air bases. (U.S. Air Force photo/Airman 1st Class Michael Battles)