Airmen from the 28th Bomb Wing and members of the Army North Civil Support Team work together during an emergency response exercise at Ellsworth Air Force Base, S.D., Aug. 30, 2018. Ellsworth Airmen trained with soldiers from the South Dakota National Guard, practicing emergency response procedures in multiple explosive, chemical and radiological environments. (U.S. Air Force photo by Senior Airman Randahl J. Jenson)