YOKOTA AIR BASE, Japan --   Airmen with the 374th Civil Engineer Squadron begin filling a crater with water and concrete, as part of Rapid Airfield Damage Repair (RADR), during Exercise Beverly Morning 18-04, at Yokota Air Base, Japan, Nov. 2, 2018. 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 Senior Airman Gabrielle Spalding).