Airman 1st Class Ricky Quan, 92nd Civil Engineer Squadron heating, ventilation, air conditioning and refrigeration technician, ensures an air conditioning unit near the 336th Training Group headquarters is functional Mar. 2, 2017, at Fairchild Air Force Base, Washington. The HVAC/R shop maintains the heating and cooling systems for every building on base. (U.S. Air Force photo/Senior Airman Mackenzie Richardson)
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