Yep...but who’s “they”?
I’d guess the development team.
It anyone wants a picture of how this works, get the book Skunkworks. It’s mostly about the SR71 and F117, but the author goes into everything they can talk about. Down to cutting street signs when they moved the planes to the airfield.
We already know who one of them is: the ancient horned goddess Hathor returned in our time as an extraterrestrial.
Hathor was a fallen Power, one among many fallen Powers worshipped as gods and goddesses by pagans. She/He was among the fallen Powers defeated by Christ prior to His return to our own dimension. Christ forbid them to ever again allow themselves to be worshipped as gods. so they've returned as Space Brothers, the Lady Hathor, orbs, and other peculiar flying shapes.
And yes, I said orbs and other shapes because they can take on the appearance of an orb as easily as they can take on a humanoid appearance. They are after all, Elemental Spirits with enormous powers over matter, fire, water, air, and energy.
The swarm is noisy and is clearly 4 rotor drones.
This is clearly terrestrial.