We are FCAT, this is what we do
Tech. Sgt. Grahame Evelyn, 90th Civil Engineering Squadron heating ventilation air conditioning technician, gives Tech. Sgt. Charles Hernandez data to write in the log, on F.E. Warren Air Force Base Wyo., Oct. 31 2017. The data is used to track trends to find root causes that are affecting large systems such as hard water or corrosion in old pipes, causing HVAC systems to fail. (U.S. Air Force Photo by Airman 1st Class Braydon Williams)

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Photo by: Airman 1st Class Braydon Williams |  VIRIN: 171031-F-RB487-1003.JPG