Capt. Bradley Harrelson, 28th Medical Dental Operations Squadron general dentist, welcomes area dentists attending the Ellsworth Air Force Base Dental Seminar at Ellsworth Air Force Base, S.D., Aug. 18, 2011. During the two-day seminar, dentists heard from Dr. Raymond Gist, the president of American Dental Association, toured a B-1B Lancer, and visited several facilities on base. (U.S. Air Force photo/Airman Alystria Maurer/Released)