U.S. Air Force Airmen from the 386th Expeditionary Civil Engineer Squadron spread out rapid set concrete during a Rapid Airfield Damage Recovery training exercise at Ali Al Salem Air Base, Kuwait, Nov. 16, 2020. After being repaired, the patch can tolerate thousands of aircraft passes, allowing the flying mission to continue unimpeded. (U.S. Air Force photo by Staff Sgt. Kenneth Boyton)