Military working dog, Ricky, from Ellsworth Air Force Base, S.D., performs an arm bite on Staff Sgt. Andrew Rounds, 4th Security Forces Squadron MWD trainer, Seymour Johnson AFB, N.C., during the Air Combat Command MWD training workshop at Langley AFB, Va., Aug. 24, 2011. Security Forces MWD and their handlers from across ACC assembled for the five day workshop. (U.S. Air Force photo by Airman 1st Class Kayla Newman/Released)