Here look at "Phoo Fighters" …

Also I would suggest that you check out … CROP CIRCLE MAKERS

Understand that Phoo Fighter technology started back in WWII … now take some leaps forward into the future .. ."now" and computer technology – computer Remote Control and add to it, if some "computer/techno geek" thought to merge Tesla technology into Foo Fighters …

Then you have a very real possible answer to all of this ….

It's great circlemakers.org made their site more reader friendly. They used to have teeny tiny print, and it was bright red, or blue.

It was difficult to read, to say the least. /wink.png' class='bbc_emoticon' alt=':P' />