>> foreign voice: attention to each watcher! please report your safety, over. >> radio voice: all is safe, over. all is safe, over! [ man on loudspeaker speaking in foreign language ] >> man: 3, 2, 1 -- shoot! [ explosion ] >> anthony: wow. [ explosion ] it's a big bang. >> man: imagine how the children pick it up. >> anthony: yeah. laos is the most heavily bombed country per capita in the history of the world. 80 million is the number of cluster bombs that did not detonate. since the war in vietnam ended, and we left our secret war here behind, 20,000 people, many of whom were not even alive during the conflicts, have been killed or maimed.