Senior Airman Sylvester Snell, 28th Medical Operations Squadron public health technician, measures the surface temperature of food products during a health inspection at the Exchange food court on Ellsworth Air Force Base, S.D., April 18, 2013. Refrigerators maintain a temperature below 42 degrees Fahrenheit to ensure food remains safe for consumption. (U.S. Air Force photo by Airman 1st Class Kate Thornton-Maurer/Released)