Staff Sgt. Ellie Dierkhising, 28th Medical Operations Squadron flight medicine independent medical technician, and Senior Airman Sylvester Snell, 28th MDOS public health technician, verify expiration dates on dairy products during a health inspection at the Exchange food court on Ellsworth Air Force Base, S.D., April 18, 2013. Public Health Airmen are dedicated to maintaining a healthy environment by preventing disease and providing services to the Ellsworth community. (U.S. Air Force photo by Airman 1st Class Kate Thornton-Maurer/Released)