U.S. Air Force Senior Airman Daniel Hicks, 35th Civil Engineer Squadron heating, ventilation, and air conditioning technician, cleans out a spall while preparing it for repair during a Multi-Capable Airmen course at Misawa Air Base, Japan, Sept. 1, 2021. A spall repair utilizes quick set concrete to temporarily repair airfield damage. (U.S. Air Force photo by Airman 1st Class Antwain Hanks)