ELMENDORF AIR FORCE BASE, Alaska -- Military working dog Arko sits next to his handler, Staff Sgt. Christopher Gunderman, 3rd Security Forces Squadron, and wife, Monica, to pose for a photograph during his retirement ceremony July 7. Arko has served 11 years in the Air Force and been deployed 5 times to the Middle East. (U.S. Air Force photo/Senior Airmen Jonathan Steffen)