67Dart273 said

I
which tells of the secret Japanese balloons carrying explosives with barometric exploders which Japan launched "in the wind" at this country by the hundreds. The U.S. govt kept these out of the news, both to avoid any panic, and to keep the Japanese from knowing if they were effective. They caused little damage. Some folks were killed, one incident was at a church picnic where someone came across the unknown device and tried to pick it up, when it exploded.

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