They're here, they've been here all along, and will probably be here in the future.

Unless like we make tons of radioactive pollution and then the aliens will stay away. The regular pollution is already deterring them from coming and visiting.

But yeah, every fighter pilot has seen flying objects that "Aren't one of ours"
It is like an open conspiracy. Everyone knows... except the MSM keeps a lid on it, until now.

My guess is that this has to do with making the earthlings scared so that those mother WEFers can impose more lockdowns and restrictions and get the next big war going.