re: #134 DangerMan

she meant fire drills /s (not really)

And we’ve had a couple of shootings where the murderers triggered fire alarms to get the people outside and thus gathered and in a place where they were much easier to shoot.

Elementary and high school I went to were 1960s construction. Sort of sprawling single-floor layouts with a lot of fire exit doors that opened directly outside simply by pushing a bar down. They were, with a few exceptions, not usable to come into the building unless someone unlatched the door for you from the inside.

Post-70s energy crisis those buildings were notoriously more expensive to heat since they had a lot of surface area and single pane glass for their volume.