A rapid airfield damage repair team with the 374th Civil Engineer Squadron mixes a rapid set concrete mix in a crater to complete the backfill portion of RADR during Samurai Readiness Inspection at Yokota Air Base, Japan, Oct. 27, 2020. The 374th CES conducted the RADR method, which tested both aspects of explosive ordinance disposal, clearing the runway of ordnance after an attack and is followed by the process of repairing the runway. The SRI assessed the Yokota's readiness across the range of military operations in a complex and dynamic international security environment. (U.S. Air Force photo by Yasuo Osakabe)