Which of the following is NOT a component of a fire extinguisher operation?

The operation of a fire extinguisher is commonly summarized by the acronym "PASS," which stands for Pull, Aim, Squeeze, and Sweep. Each of these steps is critical for effectively using a fire extinguisher in an emergency situation.

The first step, Pull, involves pulling the safety pin from the handle to unlock the extinguisher. The second step, Aim, requires the user to direct the nozzle at the base of the fire, where the fuel source is located. The third step, Squeeze, means to press the lever or handle down to release the extinguishing agent. Finally, while Sweep isn't in the provided options, it's an important step that involves moving the extinguisher nozzle from side to side while aiming at the fire.

The term "Stir" is not associated with fire extinguisher operation. This choice is not relevant as it does not relate to any recognized technique for effectively using a fire extinguisher. Thus, it is correct to identify this as the option that does not belong in the context of operating a fire extinguisher. Understanding these operation components is crucial for anyone who might need to use an extinguisher in an emergency situation.