U.S. Air Force and Japan Air Self-Defense Force civil engineers work together to cut a square around a simulated impact crater as part of rapid airfield damage repair operations during Pacific Unity 2019 at Yokota Air Base, Japan, Aug. 22, 2019. The four-day training event brought together members from the 374th Civil Engineer Squadron out of Yokota AB, local JASDF from Yokota and Iruma Air Bases, Japan, the 51st Civil Engineer Squadron out of Osan AB, and 8th CES out of Kunsan AB, both South Korea, to learn best RADR practices from the 554th RED HORSE Squadron out of Andersen Air Force Base, Guam. (U.S. Air Force photo by Senior Airman Matthew Gilmore)