Tyler Davis, E.G. Middleton, Inc. groundman, closes an electrical switch at Joint Base Langley-Eustis, Virginia, March 12, 2025. JBLE conducted the Energy Resilience Readiness Exercise, a power outage simulation often called the ‘pull-the-plug’ exercise, to test the operational capabilities after the installation is disconnected from the primary power source. (U.S. Air Force photo by Tech. Sgt. Cherish Chavez)