In my scifi book series, I portray the stars as being significantly far enough apart the only reasons to come to Earth are 'study' which would eliminate possibility of intervention/reveal, "going for a party and doing something dumb" which would be instant reveals but almost certainly not going to happen. or in the guise of legit travel but for the most people nobody realizes earth has gotten sentient and space capable yet. Aliens very rarely come along to check on the planet.
In that we do have alien neighbours, the closest being the Methuselah star wherein the low metal richness was because they did a metal extracting project on their star. But they care about us as much as earth cares about a common bird. They have their own business to deal with. Nobody is travelling 190 lightyears to check on the cows.
I think this aligns with what I think about UFOs. There's no farmers who are being probed by aliens and its 100% of the time the farmer who makes crop circles.
But then these US navy UFOs came along and I seriously question wtf. This isn't lying, this is instrumentation and measurements of movement our current plane technology cannot do.
Are they martians? Well we haven't gotten there.
Is it new top secret tech?
F22 last delivery was 10 years ago. The F22 isn't for export because it's certainly better vs f35 or equivalent, keeps the usa in power. The B1 and F117 aren't operational or at least have their retirement date. B2 has a replacement coming.
Elon Musk said: https://www.forbes.com/sites/paulkennard/2020/02/29/elon-mus...
Seems obvious to me the US airforce has pilotless gen 6 up in the air. Stealth, tiny, and capable of far greater maneuvers than anything with a pilot in it. Could this match up with what we see in the us navy? I'm still not sure we have gotten there neither.
Flipside, could it be hostile top secret tech from an enemy? This i doubt. Typical operational range of most aircraft is short, screwing with us navy means it's us military behind it.