Staff Sgt. Amelia Ruiz, 8th Security Forces Squadron military working dog handler, trains with MWD Rex on Kunsan Air Base, Republic of Korea, Feb. 5, 2021. The relationship between a handler and their MWD includes constant training, and/or course correction to ensure the safety and protection of both individuals and the safeguard of the base. (U.S. Air Force photo by Tech. Sgt. Kristin S. High)