ANNAPOLIS, Md. (Feb. 7, 2024) Cooperating local emergency services respond to a simulated threat during an active shooter training exercise held at Unaccompanied Housing onboard Naval Support Activity Annapolis. The training exercise was completed as part of Citadel Shield-Solid Curtain, which is an annual anti-terrorism and force protection exercise designed to challenge the response and capabilities of Navy security forces. (U.S. Navy photo by Mass Communication Specialist 2nd Class Mariano Lopez)