Members from Joint Base Security, JB2 line up to say farewell to military working dog Riki at the veterinary treatment facility on Joint Base Pearl Harbor-Hickam, Hawaii, March 2, 2017. During his six-years of service, Riki has responded to multiple incidents, including eight bomb threats, and performed over 200,000 vehicle searches. Riki was euthanized due to progressive incurable illness. (U.S. Air Force photo by Tech. Sgt. Heather Redman)