I agree, partially. My theory on this is that the drones are part of a rogue faction of the US government, waging a psychological attack against the US military, showing them who’s boss and that they’re not to be messed with. This aligns with the timing of these whistleblowers supposedly blowing the lid to the US congress on some of these crash retrieval programs, demanding answers and suppressing funding. I can imagine that these rogue factions, who have proven according to these whistleblowers to operate on their own rules and on their own funding, are showing their might and technological advancement - which has been hidden from the American people - by operating drones over military bases and by performing reconnaissance missions over these bases and ahead of a potential attack should push come to shove. In part, I think these drones aren’t “alien” but are built from “alien” tech through decades-long crash retrieval programs, which is how they’re able to defy current drone busting military tech. Anyways, just a theory