Senior Master Sgt. Jessica Feil, 713th Combat Operations Squadron emergency manager planner, directs teams of airmen to a transition control point during an operational readiness exercise, Beale Air Force Base, California, April 12, 2015. From there, teams of Reservists checked each other for simulated contamination. They also responded to various simulated scenarios and practiced proper procedures for responding to biological and chemical attacks. (U.S. Air Force photo/Tech. Sgt. Heather Skinkle)