Do not alarm others by excited motions. Other building occupants may look to you for protection. Reassure others that everything is under control - there will be plenty of help to assist them. Do not go to the fire area unless you are assigned to do so. Unless you are actively engaged in your routinely assigned fire response, moving from your regularly assigned area into the fire area will only make your whereabouts unknown to those who may need you before the end of the alarm and may further complicate emergency fire operations.
Most fire safety is common sense.
Think about your actions. Observe fire regulations. They are designed to protect you. When in a lab or other hazardous area, observe all safety requirements. The more combustibles in an area, the more likely a fire will start and the faster it will spread.