By ANIRUDDHA GHOSAL Associated Press LONG AN, Vietnam (AP) — There is one thing that distinguishes 60-year-old Vo Van Van’s rice fields from a mosaic of thousands of other emerald fields across Long An province in southern Vietnam’s Mekong Delta: It isn’t entirely flooded. That and the giant drone, its wingspan similar to that of Read this story at KTVZ , KEYT , KIFI , The Independent
