Back in the 80s I was involved in a Green Flag exercise out of Nellis AFB. Green Flag was a Nellis Red Flag exercise with an extra emphasis on electronic warfare in a joint service environment.
As a part of this exercise we had Navy EA-6B jamming aircraft participating along with Marine F/A-18s. Both state-of-the-art, tip of the spear aircraft at the time.
While I was debriefing Marine fighter pilots they revealed they had been chasing "ghost" targets. Solid radar contacts, good HUD displays, they just flew thru the indicated targets without seeing anything. Suspicion went to the nearby Navy jammer crews, who nodded knowingly, "yup, it was us."
Well, knowing about the configuration of the EA-6Bs, I knew the Navy guys were pulling the Marines legs, and they had nothing to do with the ghost targets. At about that time the PA announced afternoon missions were cancelled due to high winds aloft. A light bulb illuminated in my head.
I asked the Marines what was the clutter notch in their pulse doppler radars. X knots was the reply. Winds aloft were X plus 50+ knots. Normally a pulse doppler radar will reject chaff as a target (hence the pilots did not even consider the possibility their targets were chaff), but when it was blown at the wind speed that day it showed as a valid target. And since every fighter out there that day dispensed self protection chaff, there were a lot of targets. I was probably the one to figure it out because I was used to a conventional airborne radar, and was used to seeing chaff employed against me.
My points.
1. Even highly trained and capable fighter pilots can make mistakes, especially when it involves something outside of their normal experiences.
2. Aircrew are capable of great deceptions if it is funny.
I am not saying this is the case here, but Occam's Razor tells us that an extraterrestrial craft, or a human designed craft that defies what we consider to be the laws of physics is the least likely answer to the observed phenomenon. Not impossible, just not likely.