Children watch as boxcars finish during the annual Cub Scout Pack 219 Pinewood Derby at the Exchange on Royal Air Force Lakenheath, England, Feb. 24, 2015. All cars were made from a seven-inch piece of wood and had to be under the Boy Scouts of America-regulated five ounces to participate. (U.S. Air Force photo by Senior Airman Nigel Sandridge/Released)