190213-N-GA424-0136 FORT WORTH, Texas (Feb. 13, 2019) Military Working Dog Xxarco, a member of Naval Air Station Fort Worth Joint Reserve Base's military working dog unit, waits to inspect cars selected for random vehicle searches during exercise Citadel Shield-Solid Curtain 2019 (CS-SC19) at Naval Air Station Fort Worth Joint Reserve Base, Texas. 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 Jacquelyn D. Childs/Released)