Two Republic of Singapore Air Force CH-47D Chinooks taxi down the runway in support of the 2016 Golden Coyote exercise at Ellsworth Air Force Base, S.D., June 21, 2016. The Singaporean Air Force, along with 43 other units from four foreign nations, operated out of Ellsworth during Golden Coyote and provided humanitarian relief for local Native American reservations. (U.S. Air Force photo by Senior Airman Rebecca Imwalle/Released)