Yet another annoying story from the old days........fire alarms

I could post some photos but this is the "spare" computer as my "main" one blew up, temporarily LOL

On a side note the old radio console was a software controlled deal on an IBM DOS desktop. When we got the switchover to the new control consoles done and tested, and switched off the old consoles, the CRT image did not change at all LOL. The images were permanently burned into the CRT phosphor on the displays