Airman Mario Diaz stands guard during exercise at Barksdale AFB, LA.
Airman Mario Diaz, 2nd Security Forces Squadron installation access controller, guards a B-52H Stratofortress during exercise Global Thunder 20 at Barksdale Air Force Base, La., Oct. 22, 2019. Global Thunder is an annual command and control exercise that provides training opportunities for all of U.S. Strategic Command’s mission areas, tests joint and field training operations and has a specific focus on nuclear readiness. (U.S. Air Force photo by Senior Airman Tessa B. Corrick)
