Thunder Over Louisville Air Force Lightning II fighter aircraft arrive at the Thunder Over Louisville air show at the Kentucky Air National Guard Base in Louisville, Ky., April 20, 2017. The Kentucky Air Guard served as the base of operations for military aircraft performing in the show. Air National Guard photo by Lt. Col. Dale Greer SHARE: Download: Full Size (1.5 MB) Credit: Lt. Col. Dale Greer VIRIN: 170420-Z-VT419-501C.JPG Photo Gallery