KEY WEST, Fla. (Feb 6, 2023) U.S. Navy Sailors respond to a simulated active shooter as part of exercise Citadel Shield-Solid Curtain 2023 at Naval Air Station Key West’s Truman Annex in Key West, Fla. Feb 6, 2023. Exercise Citadel Shield-Solid Curtain 2023 is a two-part, anti-terrorism force protection exercise that is being conducted nationwide on Navy installations, Feb. 6-17. The annual exercise is not in response to any specific threat, but is used to evaluate the readiness of fleet and installation security programs. Naval Air Station Key West is the state-of-the-art facility for combat fighter aircraft of all military services, provides world-class pierside support to U.S. and foreign naval vessels, and is the premier training center for surface and subsurface military operations. (U.S. Navy photo by Mass Communication Specialist 2nd Class Nicholas V. Huynh)