Years ago, while working for [large Tertiary Education provider] I took a call from one of the staff in one of a clump of prefabricated buildings off to one side of the campus - could not log in, "server not available" type of message. Got them to check a couple of things and then told them I'd look into it.
Before I could move, the phone rang again, different user from same "prefab", same problem, rapidly followed by a call from a different prefab in the cluster, this time network connectivity had suddenly dropped off. Then another call from yet another prefab.
By this stage I was thinking the router had hung and needed a restart so I escaped from my desk before the phone could ring again and headed across the campus to check out the situation.
I mounted the steps up the hill to the long wooden walkway that connects the prefabs together - the long wooden walkway with the data cables connecting the prefabs to the rest of the network stapled to the wooden frame just beneath the roof - and saw that part of the roof was now a couple of feet higher than it should have been...
...due to the actions of a bright yellow hydraulic digger that was being used to tear the roof up and off the walkway.
I eyed the carnage, utterly aghast, for a moment then did a brisk about-face and headed back to the office.
I told my boss that there was an issue he really had to have a look at and led him back to the walkway.
My boss stared at the demolished walkway for a short while in stunned silence and then my (extremely Fundamentalist Born-Again Christian) boss said "The Property Manager needs a bullet."
Regrettably, no bullets or BOFH-like strategies were employed but I gather the Property Manager came away from his meeting with my boss with a firm understanding of why it pays to consult the IT Department before ordering things to be ripped apart with excavation machinery.