180131-N-LI612-151 KINGS BAY, Ga. (Jan. 31, 2018) Master-at-Arms 2nd Class Emilee Enos approaches an active shooter during an active shooter drill onboard Naval Submarine Base Kings Bay during Exercise Citadel Shield/Solid Curtain 2018 (CS/SC18). CS/SC18 is an annual anti-terrorism force protection exercise designed to train Navy security forces to respond to the changing and dynamic threats to installations and units. (U.S. Navy photo by Mass Communication Specialist 2nd Class Eli K. Buguey/Released)