Little Rock Air Force Base, Ark. --   Britt, a U.S. Air Force military working dog assigned to the 19th Security Forces Squadron, exits a plastic tube during the “Military Working Dog (MWD) Competition" at Little Rock Air Force Base, Ark., May 17, 2017. This portion of the event simulates the dog’s ability to go into a culvert after a suspect. Britt’s handler is U.S. Air Force Staff Sgt. Caleb McDaniel, 19th SFS. (U.S. Air Force photo by Master Sgt. Jeff Walston/Released)