How would you "react" to a fire? It's truly hard to say until you are put in that position. We have an emergency response plan, but chances are greater you'll be involved in a fire when you're not here at work than when you are.
Many people find it's easier to remember the steps in a process when you make an acronym out of them. So let's review how to "REACT" to a fire.
R - Remove persons from immediate danger!
E - Ensure doors and windows are closed (smoke/fire spread prevention)!
A - Activate the building alarm (inform the people)!
C - Call the fire department!
T - Treat all fires as dangerous!