Republic of Korea air force crew chiefs, 237th Fighter Squadron, Wonju Air Base, conduct a pre-flight inspection on the KA-1 Woongbi during Buddy Wing 16-2 on Osan Air Base, ROK, Feb. 23, 2016. Buddy Wing 16-2 is the second in a series of joint training, combat exercises to be conducted this year across the peninsula, utilized to strengthen the ROK/U.S. alliance. (U.S. Air Force photo by Senior Airman Kristin High/Released)