Beverly Morning 17-08
A 374th Civil Engineer Squadron firefighter prepares to remove his gas mask during exercise Beverly Morning 17-08 in conjunction with exercise Vigilant Ace 18, Dec. 4, 2017, at Yokota Air Base, Japan. The exercise included the simulation of various missile strikes to the base and simulated chemical, biological, radiological and nuclear contamination. (U.S. Air Force photo by Senior Airman Donald Hudson)