At this point if they had ill intent, something would have happened.
Methinks they are some kind of aircraft that the US has been developing for decades. The anal probe stuff was just a feint.
Or, at least, if the ill intent required immediate action on their part, something would have happened. They might be grooming us for some longer term purpose (like dinner;-))
I'm not a trusting sort, so if there is something other than just enemy-developed craft involved, I am suspicious as to motive.
And, if it is enemy craft, we are possibly in worse trouble.