Dust to dust
It’s the late ’80s and pilot fish is a systems manager responsible for two PDP-11/44s with several large disk drives the size of washing machines. Three large window air conditioners provide cooling, and naturally they periodically need to have their filters cleaned to keep them running smoothly.
The company that provided this service for years goes out of business, so the new facilities manager contracts with another. New facilities manager/new contractor is a bad combo, though, and the bad that happens is that the facilities manager gives the AC company access to the systems room while fish is at lunch. When fish returns, he can’t log into the PDP, so he heads to the systems room to find out why.