Interesting report!
Planefags may want to check eastern Europe.
Don't dox your location though.
I'm not assuming aircraft are involved but it's worth checking.
Right! Actually ADSB shows no MIL craft over all of EU /N Afr / ME. Obviously that is impossible, so radar transponder suppression has to be taking place. But it's worth checking anyway.
3 US MIL craft over CONUS seriously hauling ass >500kn (top 3 listed in table).
Not often seen.