The PASS method is a simple acronym used to help people remember the steps for using a fire extinguisher. It stands for P-Pull, A-Aim, S-Squeeze, and S-Sweep. Pull the pin at the top of the extinguisher to unlock it; aim low and point the nozzle or hose at the base of the fire; squeeze the lever above the handle to discharge the extinguishing agent; and sweep from side to side in a sweeping motion until the fire is completely out.