Chief Master Sgt. Terrence Greene, U.S. Forces Japan and 5th Air Force command chief, listens to the Medical War Reserve Overview briefing given by the 18th Medical Group Oct. 16, 2018, at Kadena Air Base, Japan. Greene visited the 18th MDG to learn about the group’s war reserves and emergency response capabilities. (U.S. Air Force photo by Senior Airman Kristan Campbell)