INCIRLIK AIR BASE, Turkey – U.S. Army Capt. James Gaffney, 39th Air Base Wing veterinarian, participates in a controlled aggression tactic demonstration with U.S. Air Force military working dog Buck at Incirlik Air Base, Turkey, June 8, 2018. There are approximately 2,500 military working dogs in service today, with roughly 700 serving at any given time overseas. (U.S. Air Force photo by Senior Airman Kirby Turbak)