190206-N-VD165-108 FORT WORTH, Texas (Feb. 6, 2019) Personnel assigned to 301st Air Fighter Wing explosive ordnance disposal arrive at a simulated active shooter scene during a drill as part of exercise Citadel Shield/Solid Curtain. The anti-terrorism and force protection exercise is conducted by Navy installations within the continental United States to ensure that the Navy is ready to respond to changing and dynamic threats at all times. (U.S. Navy photo by Mass Communication Specialist 1st Class Jose R. Jaen/Released)