Dog Demo Air Force Senior Airman Chase Shankle gives a demonstration with Arko, a military working dog, for Eglin Elementary School students at Eglin Air Force Base, Fla., May 17, 2016. More than 100 children watched two military working dog teams perform during the event. Air Force photo by Samuel King Jr. SHARE: Download: Full Size (0.37 MB) Credit: Samuel King Jr. VIRIN: 160517-F-OC707-901C.JPG Photo Gallery