Where should a fire stream be aimed during a direct attack on a localized fire?

Aiming the fire stream at the base of the fire during a direct attack is the most effective method for extinguishing flames. The base is where the fuel, heat, and oxygen interact to sustain combustion, so targeting this area allows the firefighter to interrupt the fire's growth potential.

This approach helps to cool down the flames and the fuel source, effectively reducing the temperature and removing the heat element necessary for the fire to continue. By applying water directly at the base, it maximizes the impact of the fire suppression efforts, leading to quicker containment and a higher likelihood of extinguishing the fire altogether.

In contrast, aiming at the top of the flames could allow the fire to continue burning, as the heat and fuel would still be in play. Targeting the edges might control the spread but won’t directly impact the main source of flames and heat as effectively as aiming for the base. Lastly, spraying water at the surrounding area does not target the fire itself and would be an inefficient use of resources.