U.S. Air Force Airmen from various sections of the 386th Expeditionary Civil Engineer Squadron shovel debris out of a hole to prepare a damaged area on a replicated airfield for concrete during a rapid airfield damage recovery exercise at Ali Al Salem Air Base, Kuwait, May, 12, 2021. RADR is a concept that allows CE personnel to develop a minimum airfield operating surface on a post attack damaged runway and repair it in order to continue the mission. (U.S. Air Force photo by Senior Airman Kristine Legate)