Maj. Crispin Kretzmann, 391st Expeditionary Fighter Squadron, goes over the flight plan with Capt. Sung Jin Jeon, 21st Fighter Squadron, and Maj. In Chang Jung, 21st Fighter Squadron, during a Buddy Wing Exercise March 16, 2010. The exercise partners U.S. and Republic of Korea Air Force pilots to operate effectively together for possible joint combat actions. (U.S. Air Force photo/Senior Airman Roy Lynch)