The fire balloon, was a weapon launched by Japan during World War II. A hydrogen balloon with a load varying from a 12-kilogram (26 lb) incendiary to one 15 .\r<br>\r<br>\r<br>\r<br>more at US Navy Training Film MN-5083 Public domain film from the National Archives, slightly cropped .\r<br>\r<br>In November, 1944, the Japanese began launching unmanned bomb-carrying balloons, which travelled on prevailing winds across the Pacific Ocean to North .\r<br>\r<br>Declassified US Navy Training Film Japan tried (and succeeded) to bomb the USA via balloon bombs during WWII. This is an approx. 25 minute film that shows .
