Staff Sgt. Randy Cintron 932nd Civil Engineer Squadron, heating, ventilation, and air conditioning journeyman finishes installing the cleaned heating exchanger while Tech. Sgt. Lloyd Traxler, NCOIC for the HVAC shop cleans up any debris around the heating unit February 5, 2021, inside building 3651, the 932nd Medical Group building, Scott Air Force Base, Illinois. (U.S. Air Force photo by Christopher Parr)