Which of the following is NOT typically a component of a fire engine?

A fire engine, often referred to as a pumper, is a critical piece of firefighting equipment primarily designed to transport water and firefighting personnel to the scene of a fire. It is equipped with essential components that enable effective firefighting.

Water is crucial for tackling fires, and thus, fire engines carry a supply of water. Pumps are another fundamental component, allowing firefighters to draw water from the tank or a water source and propel it through hoses to extinguish flames. Hoses are also a standard feature, as they are necessary for delivering water to the fire.

On the other hand, aerial devices, such as ladders or platforms that can reach elevated areas, are typically found on a different type of apparatus known as a fire ladder truck. While some fire engines may have limited aerial capabilities, they are not considered a standard component of a fire engine itself.

Therefore, understanding the purpose and standard equipment of fire engines clarifies why aerial devices are not typically included in their design. Instead, those are associated with specific apparatus designed for different operational functions in firefighting.