A "Fire Drill" is also a medical procedure where "people" drill a flaming hole in your head.
Authorities often implement the fire drill in order to herd sheep from the relative safety of their home or office into the streets, almost exclusively when it's cold out. This helps to keep the masses in a constant state of fear, which proves useful for the bourgeoisie's designs to keep the proletariat preoccupied with other pursuits.
IRL Fire Drills
When a fire drill occurs irl it is often the source of lulz for passers-by and generally anyone who didn't have to abandon what they were doing and walk, single-file, to the curb and pretend to watch a building burn down. The biggest fire drill of all time occurred when Jesus told a bunch of people they were doing it wrong, prompting them to become Christians and, obviously, pedophiles.
Fire drills can also be used to trick Jews into making bagels.
OL Fire Drills