A balloon bomb made its way all the way from Japan to Omaha where it exploded in the air in 1945. The bomb caused no damage, but the site has gone down in history as the only place in Nebraska to be bombed by enemies in the war.   On April 18, 1945, a Japanese bomb exploded brightly in the air over the Dundee area of Omaha.  No one was hurt in the explosion. In fact, the balloon bomb caused no damage at all.