ELLSWORTH AIR FORCE BASE, S.D. -- Capt. Bradley Harrelson, 28th Medical Operations Squadron dentist, also known as Dr. Juggles, rides a tricycle to entertain children at Francis Case School, Box Elder, S.D., Feb. 17. Dr. Juggles provides entertainment for children in hopes they will learn the importance of dental health and oral hygiene in a fun way. (U.S. Air Force photo/Airman 1st Class Corey Hook)