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PHILADELPHIA (CBS) — Don’t be alarmed when you hear multiple fire sirens going off in Philadelphia on Tuesday evening – a citywide fire drill is being held tonight.

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Beginning at 7:30 p.m., fire apparatus sirens will be blasted throughout the city for one minute to start the citywide fire drill.

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The Philadelphia Fire Department is urging all residents at that time to test their home escape plans.

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The fire department wants residents to know at least two ways out of their homes in case of emergencies.

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Prior to the citywide fire drill, the department will conduct a simulated response to a fire at a home in West Philadelphia.