Two classified UFO shapes?

[AlienSun]

A shape would be classified because it's one of ours.

Certainly, the infamous triangles seen for forty years in the US, at least, would be classified.  That's where some of the billions of unknown Pentagon funding went.

I'll say again, null-mass craft of any kind from the Betz sphere found in 1973 to the gigantic triangle craft I witnessed over Laramie in 1998 to the gigantic craft that slowly move over Santa Fe some years....  These are the greatest war weapons ever created, and as they get developed into our civilization, they will rival the invention of the wheel.

Given UFO displays over the decades we should keep in mind that one aspect of their motivations may well have been to demonstrate for us, first-hand, that the harsh articles of physics can bent. (The whole thing is exactly as in pre-1910 when learned scientists said that man could not fly in any fashion.)