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)

Tyler Davis, right, E.G. Middleton, Inc. groundman, uses a hot stick to close a fuse at Joint Base Langley-Eustis, Virginia, March 12, 2025. During the Energy Resilience Readiness Exercise, inspection teams tested JBLE personnel on their ability to adapt and overcome a loss of electricity. (U.S. Air Force photo by Tech. Sgt. Cherish Chavez)

E.G. Middleton, Inc. contractors prepare to energize a transformer as the sun comes up over Joint Base Langley-Eustis, Virginia, March 12, 2025. JBLE conducted the Energy Resilience Readiness Exercise to identify any hidden vulnerabilities and verify that backup systems and processes function as expected with no mission impacts. (U.S. Air Force photo by Tech. Sgt. Cherish Chavez)

Andrew McQuade, E.G. Middleton, Inc. Class-A terminator, opens a transformer at Joint Base Langley-Eustis, Virginia, March 12, 2025. JBLE conducted the Energy Resilience Readiness Exercise to identify any hidden vulnerabilities and verify that backup systems and processes function as expected with no mission impacts. (U.S. Air Force photo by Tech. Sgt. Cherish Chavez)

Matt Kennedy, E.G. Middleton, Inc. lineman, hands a hot stick down to a coworker after closing a fuse at Joint Base Langley-Eustis, Virginia, March 12, 2025. During the Energy Resilience Readiness Exercise, inspection teams tested JBLE personnel on their ability to adapt and overcome a loss of electricity. (U.S. Air Force photo by Tech. Sgt. Cherish Chavez)

Matt Kennedy, E.G. Middleton, Inc. lineman, throws his protective sleeves down to Tyler Davis, E.G. Middleton, Inc. groundman, after closing a fuse at Joint Base Langley-Eustis, Virginia, March 12, 2025. JBLE conducted the Energy Resilience Readiness Exercise to identify any hidden vulnerabilities and verify that backup systems and processes function as expected with no mission impacts. (U.S. Air Force photo by Tech. Sgt. Cherish Chavez)

From the left, Joe Gandarillas, 633d Civil Engineer Squadron high voltage electrician, and David Spangler, 633d CES electrical foreman, prepare to turn on a power box 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. The exercise is designed to test the operational capabilities after the installation is disconnected from the primary power source. Inspection teams evaluated the primary and backup energy systems to determine any gaps in performance and identify improvement opportunities. Personnel used their limited resources to ensure continued communication between squadrons were maintained and base operations continued functioning. Throughout the exercise, JBLE maintained mission readiness and power was restored after a 24-hour period. (U.S. Air Force photo by Airman 1st Class Donnell Ramsey)

Joe Gandarillas, 633d Civil Engineer Squadron high voltage electrician, uses a non-conductive tool to turn the power back on at Joint Base Langley-Eustis, Virginia, March 12, 2025. During the Energy Resilience Readiness Exercise, inspection teams tested JBLE personnel on their ability to adapt and overcome a loss of electricity. (U.S. Air Force photo by Airman 1st Class Donnell Ramsey)

David Spangler, 633d Civil Engineer Squadron electrical foreman, locks up a power box at Joint Base Langley-Eustis, Virginia, March 12, 2025. JBLE conducted the Energy Resilience Readiness Exercise to identify any hidden vulnerabilities and verify that backup systems and processes function as expected with no mission impacts. (U.S. Air Force photo by Airman 1st Class Donnell Ramsey)

From the left, David Spangler, 633d Civil Engineer Squadron electrical foreman, and Joe Gandarillas, 633d CES high voltage electrician, walk to their van at Joint Base Langley-Eustis, Virginia, March 12, 2025. After the installation successfully completed the Energy Resilience Readiness Exercise, Spangler and Gandarillas restored power to 7 power boxes. (U.S. Air Force photo by Airman 1st Class Donnell Ramsey)