Staff Sgt. Timothy Castillo, 7th Security Forces Squadron Military Working Dog trainer, Dyess Air Force Base, Texas, and MWD, Condor, demonstrate arm bite techniques during the Air Combat Command MWD training workshop at Langley AFB, Va., Aug. 25, 2011. The workshop teaches MWD handlers how to train canines to obey commands by delving into the psychology of the dogs using their natural genetic blueprint. (U.S. Air Force photo by Staff Sgt. Jeff Nevison/Released)