U.S. Air Force Staff Sgt. Heather Merrill, 52nd Medical Group biomedical equipment technician, tightens a bolt on a sterilizer at Spangdahlem Air Base, Germany, April 1, 2020. The sterilizer is the final step medical tools go through before returning to their respective departments. (U.S. Air Force photo by Senior Airman Melody W. Howley)