Crescent Reach 16
An Airman wears a gas mask during a chemical, biological, radiological, nuclear and explosives drill as part of Exercise Crescent Reach 16, May 19, 2016, at Joint Base Charleston, S.C. The exercise tested JB Charleston’s ability to launch a large aircraft formation and mobilize a large amount of cargo and passengers. (U.S. Air Force photo/Staff Sgt. Jared Trimarchi)