Staff Sgt. Bryan Tarantella, 8th Security Forces military working dog handler, walks Stella, 8th SFS military working dog, into her kennel after a day of agility bite training and commands at Kunsan Air Base, Republic of Korea, Nov. 11, 2016. Stella has come to the end of her military service and will be retiring because of lumbosacral disease, which is the degeneration of the joints, spine and compression of the nerves causing lower back discomfort as well as leg pain. (U.S. Air Force photo by Senior Airman Colville McFee/Released)