Each Memorial Day and Veterans Day, the winding roads of Lake Charles’s Orange Grove-Graceland Cemetery transform into the Avenue of Flags. Recognized as the nation’s largest display of memorial casket flags, this powerful tribute features 1,270 American flags honoring local heroes. What began in 1983 with just 50 flags has grown into a 1.4-mile patriotic display. Because of its scale, the event has been recognized as an official “Southern Trave…