A Korean Air Boeing 777 aircraft prepares to take off during the Mutual Airlift Support Agreement (MASA) exercise at Osan Air Base, Republic of Korea May 4, 2018. Close coordination between U.S. Transportation Command at Scott Air Force Base, Illinois, the ROK Air Force, U.S. Forces Korea, Korean Air and the Osan Air Base team was required to accomplish the transport of more than 500 Soldiers to exercise Balikatan in the Philippines, a first for Osan Air Base. (U.S. Air Force photo by Tech. Sgt. Ashley Tyler)