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U.S. Air Force Col. Kevin Walsh, 51st Fighter Wing deputy commander, conducts pre-flight checks of an F-16 Fighting Falcon at Osan Air Base, Republic of Korea, May 6, 2025. Walsh reached 3,000 flight hours after a distinguished career that included four combat deployments, commanding the U.S. Air Force Demonstration Squadron, the Thunderbirds, and instructing F-16 pilots across seven allied nations. (U.S. Air Force photo by Senior Airman Sarah Williams)