Two Kentucky Air Guard C-130s conduct a flyover at Resthaven Memorial Park in Louisville, Ky., on Sept. 11, 2011, during a 9/11 observance and the closing ceremonies for the Dignity Memorial Vietnam Wall, a 3/4-scale replica of the Vietnam Veteran's Memorial in Washington, D.C., that has been exhibited in more than 200 cities across the country since 1990. (U.S. Air Force photo by Maj. Dale Greer)