NAVAL STATION NORFOLK (Feb. 8, 2023) Sailors and civilians assigned to Naval Station Norfolk conduct an active shooter drill during Citadel Shield-Solid Curtain 2023. Citadel Shield-Solid Curtain is an annual two-week long security training exercise that takes place on naval bases throughout the continental United States. (U.S. Navy photo by Mass Communication Specialist 2nd Class Emily Casavant)