What does the "squeeze" in the P.A.S.S. system refer to?

The "squeeze" in the P.A.S.S. system specifically refers to the action of pressing down on the trigger handle of a fire extinguisher to release the extinguishing agent. The P.A.S.S. acronym stands for Pull, Aim, Squeeze, and Sweep, which outlines the proper procedure for using a fire extinguisher effectively.

In this context, after pulling the pin to unlock the extinguisher and aiming the nozzle at the base of the fire, the next step is to squeeze the handle, which allows the extinguishing chemical to be discharged. This action is crucial for controlling the flow and direction of the extinguishing agent, ensuring that it effectively reaches the fire. Proper understanding of this step is vital for effective fire response and safety.