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Two formations consisting of U.S. Air Force B-1B Lancers, F-16 Fighting Falcons and Republic of Korea (ROK) air force F-15K Strike Eagles perform a flyover over Osan Air Base, ROK, Sept. 13, 2016. The aircraft formations showcased the ironclad commitment the U.S. maintains to the defense of the ROK and the resolve of both nations to maintain stability and security on the Korean Peninsula. The B-1s are currently assigned to Andersen Air Base, Guam.