Staff Sgt. Jina Rosales, 28th Medical Operations Squadron dental laboratory technician, polishes an interim removable partial denture in the dental lab at Ellsworth Air Force Base, S.D., Feb. 14, 2012. The dental lab creates a variety of appliances to keep Airmen healthy and deployable. (U.S. Air Force photo by Airman 1st Class Kate Thornton/Released)