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You need to act smart and act quickly when fire breaks into your building. Don’t be dazed if your see fire eye to eye. Be strong, and keep your mind working. Most deaths happen during a firebreak because people panic and get stuck in places that they are not supposed to go.
For example, people might panic and shut themselves up in the elevator. This is a foolish and disastrous thing do to. Because during firebreaks, the elevator is the one that catches fire fast because the cable connecting it catches fire.
In a firebreak, before leaving your apartment or office, check if people are there in the office. If no, then come out and close the door. Do not lock it. When you close the door, you are also closing a path of destruction for the fire. You also give a room for fire personnel to get into. Fire personnel cannot obviously get into a burning room right away.
Yell fire, but do not panic. Ask others to stop screaming. Pull the fire extinguisher out, and break the fire-glass. Breaking the fire-glass sets the fire alarm. Sprinkles and fire-extinguishing gases might come into action. They could be effective if the fire is small.
Do not take the elevators. Even if you feel that this will get you down faster. Take the nearest fire exit. Some buildings have fire exits that are built to insulate people against fire. Fire exits are robust, and airy. You need to periodically check outside the window of the fire-exit if firemen are waiting for you with their ladders. If yes, hop on.