U.S. Soldiers with the 821st Transportation Battalion,

U.S. Soldiers with the 821st Transportation Battalion, United States Army Reserves, Kan., and the 200th Engineer Company, South Dakota Army National Guard refuels a Heavy Expanded Mobility Tactical M978A4 Fuel Servicing Truck during the Golden Coyote exercise at Base Custer, S.D., June 16, 2017. The Golden Coyote exercise is a three-phase, scenario-driven exercise conducted in the Black Hills of South Dakota and Wyoming, which enables commanders to focus on mission essential task requirements, warrior tasks and battle drills. (U.S. Army photo by Spc. Kevin Kim)