When using an exterior fire stream, how should firefighters direct the stream for maximum effect?

Directing an exterior fire stream at a high angle towards the ceiling is effective because it allows the water to create a wide coverage area, providing better chances of cooling and suppressing the fire. When water is applied to the ceiling, it will cascade down, helping to cool the smoke and gases while creating a steam blanket which can suppress the fire more effectively. This method also helps to address heat accumulation in the upper layers of the space, potentially reducing the chance of flashover and improving conditions for victims or firefighters who may be entering the structure.

Additionally, using a high-angle approach minimizes the risk of pushing the fire further into the room or onto other unburned materials, which can occur if the stream is directed too directly at the fire source. By targeting the ceiling, firefighters optimize their efforts for a broader impact on the fire environment rather than concentrating only on the flames.