The aircraft responsible for the Battle of LA was either of Axis design or
it was a craft of true unknown origin.
Was it technology that was reverse engineered from a crashed UFO in Germany, Italy or Poland recovered in the 1930's?
There are a lot of stories of such events if you look into it in depth.
American eye witnesses claim it was an out of this world design. They may have been correct.
The profile of the craft matches the German Haunebu 1 flying disc design. Compare the Negative Crop image to the Haunebu Types diagram on the left.
It has the same smaller dome shape underneath the craft and the 25m diameter is the correct size. The problem is that many historians claim that these disc designs never left the drawing board. In affect they are inadvertently saying this is an Alien Craft?