BTW That said (re not waiting for the suits) - there is a darned good chance I'll be the LAST person off my floor. I'm one of the floor wardens, and I take my job seriously - VERY seriously. When the FD gets to my floor, they WILL find office doors marked with SAR markings - The FD chief who gives us our drills always laughs at coming to out floor - because we all know the answers, and the fire team on the floor actually takes their job seriously - to the point we make a POINT of showing up at the drills with our scanners running on FD freqs, and our go bags with us.. (yeah all 6 wardens/searchers have go bags - and all have first aid cards).
We had what turned out to me a false alarm about 6 months ago - we HAD the floor 1/2 evac'd, search started, by the time the fire center in the lobby answered the warden phone, and they told me that they had tripped a false alarm, and I should stop the evac. Had to go remove the chalk marks off some doors - but so what
You always get the folks who are "It's probably a false alarm" - I've found when a person walks in and looks at them and says "MOVE...NOW" - they move.. learn the "command voice" - it work. I'm also not afraid to reach across a desk and hang up a phone, or unplug a computer. If your moving - you at least get to save the work on your PC - I get to your desk, and your still on the PC - I'll unplug it