PANAMA CITY, Fla. (Feb. 1, 2021) Traffic barriers are engaged at the front gate of Naval Support Activity Panama City during Exercise Citadel Shield-Solid Curtain 2021. Citadel Shield-Solid Curtain is a two-part, anti-terrorism force protection exercise that is being conducted nationwide on Navy installations, Feb. 1-12. The annual exercise is not in response to any specific threat, but is used to evaluate the readiness of fleet and installation security programs. (U.S. Navy photo by Mass Communication Specialist 2nd Class Clyde B. Laster)