Airmen assigned to the 8th Civil Engineer Squadron prepare to repair a simulated crater during a Rapid Airfield Damage Repair routine training at Kunsan Air Base, Republic of Korea, Nov. 3, 2021. RADR is a multi-staged process which quickly and effectively repairs airfields, allowing for operations to continue in combat situations. (U.S. Air Force photo by Staff Sgt. Gabrielle Spalding)