An F6A reconnaissance robot is operated by a 28th Civil Engineer Squadron explosive ordinance disposal expert 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)