U. S. Air Force Staff Sgt. Kelsey Morin, 316th Security Forces Squadron K-9 handler, escorts Yoci, a military working dog, onto an AW-139 helicopter during a training exercise at Joint Base Andrews, Md., Oct. 5, 2023. The K-9s were familiarized with the aircraft platform, engines and ground movement during the exercise. (U.S. Air Force photo by Senior Airman Bridgitte Taylor)