Capt. Bradley Harrelson, 28th Medical Operations Squadron dentist, also known as Dr. Juggles, demonstrates the proper way to floss at Horace Mann Elementary School in Rapid City, S.D., Feb. 9, 2012. Dr. Juggles encouraged the children’s engagement in the performances to make learning about oral hygiene fun and interesting. (U.S. Air Force photo by Airman 1st Class Kate Thornton/Released)