Well, ya know, you can't expect a bunch of guys who stare at flying things all day to tell swamp gas when they see it...
There oughta be a citizens committee that can flat out summarily fire the idiot from the FAA who would even come up with this one in his sleep.
This one is sounding more and more like the real McCoy.
That would seem logical, however case studies seem to indicate pilots etc typically jump to incorrect conclusions under the assumption anything appearing to be flying must be physically designed for flight.
Case Studies In Pilot Misperceptions Of "UFOs"
http://www.zip.com.au/~psmith/pilot-ufos.html