Missing from the discussion is the possibility of drone swarms
As the above video shows, using a swarm of drones it's possible to achieve the appearance of rapid motion without actually moving. Rather the illusion of movement is achieved by toggling the drones' visibility.
According to open source info: optical stealth that can turn a plane nearly invisible when viewed at several thousand feet as been around for a long time:
The idea reappeared in the 90's with tests of an F-15 fitted with fluorescent panels. According to one report, “the fighter virtually disappeared as it lifted off the runway.” (It may have been miles away at the time though...) The latest incarnation can be seen (no pun intended) in a report at FlightGlobal, "Electroluminescence is key to invisibility." Researchers from the University of Kansas outfitted a six-and-a-half-foot drone "with an electroluminescent surface" -- a material that lights up in response to a current. Then they took a pair of pictures, when the drone soared to a thousand feet.
(
https://www.wired.com/2008/05/invisible-drone/)
As for radar stealth, it seems similarly "toggleable". According to open source information stealth aircrafts merely bounces radar reflections toward a direction without receivers, to achieve stealth, aircrafts have to plan their flight very carefully to avoid bouncing radar signals toward a receiver, based on that description it's probably not too hard to "turn off" an craft's stealth intentionally by simply pointing the craft the wrong way. (
https://www.sandboxx.us/blog/americ...alth-fighters-on-radar-and-it-isnt-a-problem/)
Also the same idea have been implemented in IR
Adaptiv is an active camouflage technology developed by BAE Systems AB to protect military vehicles from detection by far infrared night vision devices, providing infrared stealth. It consists of an array of hexagonal Peltier plates which can be rapidly heated and cooled to form any desired image, such as of the natural background or of a non-target object. Its goal is to develop stealth ground vehicles.
(
https://en.wikipedia.org/wiki/Adaptiv)
Can stealth technology replicate UFO behaviors? I suspect they can.
For example during the tic tac encounter it could be that the tic tac didn't actually fly away at supersonic speed, it simply turned nearly invisible to the naked eye. 30 seconds later, a completely different stealthy-to-radar drone makes itself briefly visible to radar 60 miles away
Similarly the feat of descending from 80000 feet to sea level could be accomplished by having two stealth drones/balloon making themselves briefly visible to radar in rapid sequence
Similarly appearance of very long loitering time can be achieved by multiple crafts doing a relay of sorts.
The rapid side to side movements can be achieved by a swarm of drones with adaptive IR flying hovering in a line and turning their IR signature on and off.
Other considerations
1. the military certainly have the incentive to develop various decoy technologies.
2. if they did develop the technology it would make sense to pit the tech against "trained observers" and see how they would react in a kind of blind test. This also explains why, according to Fervor, the captain of the carrier was quite unimpressed with the UAP footage
3. while the mechanism seems a bit convoluted: in the context of deliberate deception, convoluted schemes are actually quite normal. e.g. magic tricks often involve multiple mechanism for redirection.
4. the mechanism i am postulating seems consistent with the fact that UAP has never been directly observed to
accelerate to hypersonic speed, they always "just disappear". even if the UAP where moving at 80000 mph, that'd be about 22 miles per second, at 20 FPS we should expect to the cameras to capture at least 2-3 frame of the craft accelerating away before it becomes invisible: however none of the footage seem to capture any kind of acceleration.
5. in the case of the transmedium uap you can literally see the dot turning on and off.