At a previous employer, I went through the "Emergency Responder" training, which meant that I also kept a reflective orange vest at my desk, with an appropriate

At a previous employer, I went through the "Emergency Responder" training, which meant that I also kept a reflective orange vest at my desk, with an appropriate label on the back. We had fire drills where the list of people who knew about the drill-to-come was intentionally kept to a tiny handful of people, usually just one person per floor. When the alarm went off, it was up to us to go into Fire Marshal mode and direct people to leave through the stairs, stay to the right because the fire department personnel will be coming up the inside, etc.... That process was actually surprisingly effective. I was a good choice because I can be a very loud person, when I want. I have maxxed out my SPL meter at 127dBA, and I've checked into what it would take to make an official go at getting the worlds record for "loudest person".