Thunder Over Louisville air show marks 70th anniversary of U.S. Air Force, Kentucky Air Guard
A Kentucky Army National Guard UH-60 Blackhawk helicopter flies over the Ohio River after deploying Kentucky Air National Guardsmen into to the water to conduct a simulated rescue mission during the Thunder Over Louisville air show in Louisville, Ky., April 22, 2017. The annual show has grown to become the largest single-day event of its kind in the nation. (U.S. Air National Guard photo by Lt. Col. Dale Greer)

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Photo by: Lt. Col. Dale Greer |  VIRIN: 170422-Z-VT419-496.JPG