Consider this scenario: A building in the downtown area of a major city suffered a gas explosion causing two floors to collapse. Firefighters are called to the scene to extinguish the flames and rescue trapped victims. Which fire apparatuses are most needed at the scenario?

A fire engine is needed to supply water and extinguish the flames. A rescue unit is essential for locating and extricating people trapped by the collapsed floors, while a tower ladder can reach victims and provide access to upper levels. Brush trucks and water tenders are less suited to this dense downtown building emergency.

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