Thunder Over Louisville air show marks 70th anniversary of U.S. Air Force, Kentucky Air Guard
A joint color guard comprised of members from the Kentucky Army and Air National Guard present the colors to kick off the Thunder Over Louisville air show at the downtown waterfront in Louisville, Ky., April 22, 2017. The event, which features more than a dozen military aircraft, has grown to become the largest annual single-day air show in America. (U.S. Air National Guard photo by Lt. Col. Dale Greer)

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Photo by: Lt. Col. Dale Greer |  VIRIN: 170422-Z-VT419-021.JPG