U.S. Soldiers assigned to various units under the 25th Infantry Division wait to board a Korean Air Boeing 777 aircraft at Osan Air Base, Republic of Korea May 4, 2018. The Soldiers boarded the plane as part of the Mutual Airlift Support Agreement exercise for the first time at Osan Air Base to test interoperability and procedures between the United States military, ROK Air Force and Korean Air Lines. (U.S. Air Force photo by Tech. Sgt. Ashley Tyler)