U.S. Air Force Senior Airman Nathan Strickland, wheel and tire technician assigned to the 18th Equipment Maintenance Squadron, tightens the bolts on an aircraft wheel at Kadena Air Base, Japan, May 22, 2019. The wheels and tires must be separated, washed and inspected before going back out to be put on an aircraft. (U.S. Air Force photo by Naoto Anazawa)