An A-10 Thunderbolt II engine waits to be placed onto its aircraft’s engine mount at Osan Air Base, Republic of Korea, Feb. 28, 2014. The A-10 operates off of two General Electric TF34-GE-100 turbofan engines and was designed for close air support, airborne forward air control and combat search and rescue operations. (U.S. Air Force photo/Senior Airman Siuta B. Ika)