Members from U.S. and Republic of Korea militaries man the Hardened Theater Air Control Center during the first day of Ulchi Freedom Guardian at Osan Air Base, South Korea, August 17, 2015. UFG is held annually to strengthen the U.S.-ROK alliance commanders’ and staff members’ ability to translate information into actionable decision-making. Portions of the image were blurred for security concerns. Picture taken on August 17, 2015. Courtesy John Linzmeier/U.S. Air Force photo.