In the old days the first sign you were about to get a call from HR was not being able to log into your computer.
If that is still the signal then everyone in aero is on the chopping block.
The number of access issues and the rumors, workarounds, and tin foil hat superstitions about getting to any random IT run resource is unbelievable. I would suspect an attack but that fails the “simplest logical cause” test…. Incompetence
I guess the way to know you are about to be fired is to look at your department. Honaero IT? Pack up.