Under which circumstance can a firefighter control a large handline?

Controlling a large handline effectively is crucial during firefighting operations, and achieving this control is influenced by how the handline is set up and deployed. When the handline is well-anchored, it means that the nozzle is stabilized and secured in place, allowing the firefighter to manage the force of the water being discharged more effectively. This stability helps counteract the recoil and movement caused by the high-pressure water flowing through the line, making it easier for the firefighter to maintain control and aim the stream accurately at the fire.

In contrast, without a good anchoring system, the pressure from the water can make it difficult for a firefighter to hold the line steady, leading to challenges in directing the stream and increasing the risk of injury or equipment damage. Anchoring typically involves using physical means, such as securing the line to a solid object or utilizing additional personnel to assist in maintaining control while deploying the line. This practice ensures safety and effectiveness during fire suppression operations.