190312-F-HK496-1032
Diego, a 51st Security Forces Squadron military working dog, jumps over a training course obstacle at Osan Air Base, South Korea, March 12, 2019. On March 13, 2019, military working dogs were celebrated for National K9 Veterans Day. Additionally, the U.S. Army established the War Dog Program, or K-9 Corps, on this day in 1942. (U.S. Air Force photo by Staff Sgt. Ramon A. Adelan)