500-pound bomb dropped during World War II explodes at Japanese airport: Watch video USA TODAYBuried US second world war bomb explodes at Japanese airport The GuardianBomb fragments discovered at Miyazaki Airport after explosion 朝日新聞デジタルBomb dropped by U.S. in World War II explodes at airport in Japan, causing runway damage and cancellation of 80 flights CBS News500 Lb. Bomb From World War 2 Explodes at Airport in Japan, Creating Massive Crater PEOPLE