Aliens!
…maybe not…
I wrote a post several years ago now while researching Magneto Hydro Dynamic levitation technology for my books (e.g. the Sky Whale from Book Three):
I was recently reminded of the concept again reading this New York Times article from a few days ago:
“The strange objects, one of them like a spinning top moving against the wind, appeared almost daily from the summer of 2014 to March 2015, high in the skies over the East Coast. Navy pilots reported to their superiors that the objects had no visible engine or infrared exhaust plumes, but that they could reach 30,000 feet and hypersonic speeds.”
It certainly sounds like the pilots could be describing something based on WEAV…
(also: Solid State Aircraft)