That’s the least of our worries.
I’m afraid they are going to show up offering to “help” humanity.
“To Serve Man’’.
You posting is shade of Reagan during his campaigns, debates and his big speech at the UN.(”what if we faced an otherworldly threat?)
(perhaps in the future the words we’ll all dread most) “Hello Earthlings...we are from the Galactic Federal government..and we are here to help!”