SILVERDALE, Wash. (Feb. 8, 2021) Naval Base Kitsap Bangor Security Forces participate in an active shooter drill during Exercise Citadel Shield-Solid Curtain 2021. CS-SC 21 is designed to enhance the readiness of Navy personnel to deter and respond to potential threats to installations and units, and ensure seamless interoperability among the participants. (U.S. Navy photo by Mass Communication Specialist 2nd Class Heather C. Wamsley)