Some of these cases near high security installations (not all, but some) are in fact tests to see who will become a whistleblower and leak national security secrets.
The Deep State had a lot of tricks they could play with secret high tech to fool the peons.
The scenario:
“UFO” event happens.
Employees are then instructed to remain silent since this is a national security matter.
Local media outlets were monitored—to see which employees started blabbing.
The “untrustworthy” employees are moved to non-sensitive areas going forward.
Nobody was instructed. Everyone was talking about it for days.