???Johny???, 436th Security Forces military working dog, is shown crouched down while running through a swinging pipe while on the 436th Security Forces Squadron's obedience course Sept. 15, 2014, at Dover Air Force Base, Del. The dog is looking down as he approaches the end of the pipe and will exit. Obedience to the handler is taught and reinforced on the course using obstacles such as this. (U.S. Air Force photo/Greg L. Davis)
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