Which of the following is NOT a purpose of attack hose?

The primary purposes of attack hose are centered around the active engagement of fire control and suppression. Fire suppression refers to the use of the hose to deliver water directly onto the fire to extinguish it. Direct water application is also an essential function since it involves using the hose to precisely target flames and hot spots during firefighting efforts. Rescue operations can be part of the broader mission during firefighting, but the direct use of attack hose to facilitate rescues is less about the hose's inherent capabilities and more about the overall operation.

In contrast, water supply is not considered a purpose of attack hose. Instead, it is typically a function filled by supply lines that bring water from a source, such as a hydrant, to the apparatus or, if necessary, directly to the attack hose through feeder lines. Attack hose is designed specifically to combat fires rather than serve as a means of bringing water to the firefighting operation. Therefore, identifying water supply as not a purpose of attack hose aligns with its intended use and the role it plays in firefighting strategy and operations.