
While many in the UFO community think the February 24-25th, 1942 incident where the United State Army allegedly had a battle with a UFO over the Pacific Ocean just off the coast of Los Angeles…

…the thing that was fired upon was a Japanese balloon, as explained in this paragraph from a 1947 report about balloons during the 1942 time-frame:

Here’s a PDF copy of the full 1947 report, from our UFO web-site:
Controlled-Altitude Free Balloons
.