Every place that has some kind of fire alert system has a policy for what to do when that system alerts people to a fire. We start practicing this stuff as kids, in daycare or preschool or kindergarten or whatever you call your first educational experience, and continue into our adulthood. I missed a few years in there, since I was homeschooled. My mother tried to do a fire drill once, back when she was convinced that she could just have “school” happen at our house the same way it would at the local Catholic school that she would have otherwise sent us to, but it went poorly and she never tried again. We did get “fire escape ladders” to hang out our bedroom windows though, in case we needed to get out of our bedrooms and the door was blocked by fire, but I think the only one that got used was when my brother snuck out of the house using it, breaking the screen he dropped in the process. Anyway. I did fire drills in high school, in college (in various places: once while in class, thrice while in different dorms, and then yearly at the theater I worked at but that was a very different experience), at both my post-college jobs, and even at a couple apartments. They’re all basically the same, with a few important differences. In every single case, you get out of the building, attend to any people who might be on fire (to a degree), get away from the fire, wait for the all-clear signal, and then go back inside where you have to spend the rest of the day pretending your whole day has not been turned upside down by this disruption. Or, in my recent case, stare longingly at your car as it tempts you to just drive away since it’s unlikely that anyone will notice your absence.