[advertising guy]

they have a triangle with fans at the corners and middle

then a steel type grate that is “under” the fans covering the exact shape of the triangle. In this grate are a zillion holes and the grates edges are turned up,

the use of motors and then forcing addition air thru the holes is like displacement and the weight of the object
is controlled........

[IllumiNaughtyByNature]

There is a story under all the carnage here. I think it was a UFO story, but a digital autopsy will be needed. :o)