If directed to help fight a fire with a portable fire extinguisher, what is the proper technique?

Directing the spray in a sweeping motion toward the base of the fire is the correct technique for using a portable fire extinguisher effectively. This approach targets the fuel source of the fire, increasing the likelihood of extinguishing the flames. By focusing on the base, the fire is deprived of essential materials for combustion, which is crucial for successful suppression.

Using a sweeping motion allows the extinguisher operator to cover a broader area at the base of the fire, which can help mitigate the flames more comprehensively compared to spraying directly at the flames. This method also minimizes the risk of flames spreading or reigniting.

Overall, employing this technique ensures a safer and more effective response to a fire emergency, emphasizing the importance of proper training in fire safety protocols.