From 1964 to 1973, the U.S. dropped more than two million tons of ordnance on Laos during 580,000 bombing missions—equal to a planeload of bombs every 8 minutes, 24-hours a day, for 9 years – making Laos the most heavily bombed country per capita in history. http://legaciesofwar.org/about-laos/secret-war-laos/