[xone]

Well, they were balloons with incendiary bombs

.https://www.unexplainable.net/mysteries/mystery-of-japanese-balloon-bombs-in-world-war-ii.php#:~:text=One%20of%20World%20War%20II%E2%80%99s%20best-kept%20secrets%20was,the%20high-altitude%20trade%20winds%20towards%20the%20United%20States.

[Melian]

Re Balloon Bombs:

I had no idea there were so many. Very interesting. Again, ThankQ for the history lesson.