Halo, Newport News Police Department working dog, waits his turn to practice bite-building techniques at Joint Base Langley-Eustis, Va., July 25, 2017. Canine handlers from Newport News, Chesapeake and Virginia Beach, Va., Police Departments joined the 3rd Military Police Detachment working dog handlers for canine handling training. (U.S. Air Force photo/Airman 1st Class Kaylee Dubois)