What is it called when an engine secures to a hydrant on the way in and lays supply line until it reaches its attack position?

The process of an engine securing to a hydrant and laying a supply line until it reaches its attack position is referred to as a forward (straight) lay. This method involves extending the supply line directly from the water source (the hydrant) to the fire scene, providing a continuous and effective water supply for firefighting operations.

This approach is beneficial for several reasons. First, it allows for the engine to maintain a clear path for other responding units, as the apparatus does not need to block access after securing the hydrant. Additionally, a forward lay ensures that the engine has immediate access to water when it reaches the attack position. The choice of this technique reflects a strategic decision to optimize both firefighting efficiency and access on the scene.

Understanding this operation is crucial for firefighters, as it directly impacts their ability to effectively combat fires by ensuring that there is a reliable water supply ready when needed.