Staff Sgt. Brandon Soto, 436th Security Forces Squadron military working dog handler, pets retired MWD Kali at the veterinary treatment facility on Dover Air Force Base, Delaware, April 22, 2021. Following seven years of service, Kali was humanely euthanized after suffering from a tumor in her abdomen. (U.S. Air Force photo by Airman 1st Class Cydney Lee)