Gen. James Thurman, U.S. Forces Korea commander, speaks to US, Australian, and Republic of Korea Airmen about the importance of their work during a visit to the Air Operations Center 2013 at Osan Air Base, Republic of Korea, Aug. 26, 2013 during exercise Ulchi Freedom Guardian. The annual exercise, conducted by the ROK and U.S. Combined Forces Command, runs through Aug. 30. (U.S. Air Force photo/Staff Sgt. Emerson Nuñez)