at The Planet in Dallas c. 2002 the EPO button was exposed with no cover, and in very very close proximity to the "Exit" button for the doors...

one day, a colo customer hit the wrong button on the way out, and uhh, there was an outage

My boss at my first job hit the Big Red Button by swinging his arms too big in our datacenter one day, shutting down hundreds of servers and the mainframe, wreaking havoc for days!

That was when we installed the Big Clear Button Cover.