Pilots from the Eastern Bloc and NATO countries have had sightings. It's not just a US thing. People have been claiming to see them for longer than the USA has existed.
Not to be that guy, but if the majority of sightings coming from nations capable of producing advanced military aircraft... well perhaps the aliens thought the F-15 was badass and wanted a closer look?
Not to be that guy, but if the majority of sightings coming from nations capable of producing advanced military aircraft... well perhaps the aliens thought the F-15 was badass and wanted a closer look?