At a military communications center I once worked at we had the EPO button positioned near the door so you knew where it was, and you could hit it on the way out as you evacuated. One day someone had a toolbag in their hand as they were leaving and it swung and hit that big red button ... and it did what it was supposed to do - cutting all the power to the room. Which ended up being a big hassle - they had to reload crypto keys and so on.

That very afternoon a plastic guard was installed over the button so you had to lift it first.

One of my jobs in a big computer room had the same big red buttons by the door for the fire suppression system. By the time I'd gotten there in the 90s, they already had plastic covers on them, and had since a similar incident early 80s.

Hey, they figured it out with fire extinguishers!