U.S. Air Force and the Japan Air Self-Defense Force (JASDF) civil engineers work together to cut a square around the simulated impact crater as part of rapid airfield damage repair (RADR) operations during Pacific Unity 2019 at Yokota Air Base, Japan, August 22, 2019. The four-day training event brought together members from the 374th Civil Engineer Squadron out of Yokota, local JASDF from Yokota and Iruma Air Base, Japan, the 51st Civil Engineer Squadron out of Osan Air Base, and 8th Civil Engineer Squadron out of Kunsan Air Base, both Republic of 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)