What does the first 'P' in PASS represent when using a fire extinguisher?

The first 'P' in the acronym PASS stands for "Pull," which refers to the initial step you should take when using a fire extinguisher. When you encounter a fire and need to use an extinguisher, the first action is to pull the safety pin located at the top of the extinguisher. This pin keeps the handle from being accidentally pressed and allows you to fire up the extinguisher safely. It's important to remember this step, as failing to pull the pin means the extinguisher cannot be activated, rendering it ineffective in putting out the fire. This critical first action sets you on the right path to effectively use the fire extinguisher and help respond to a fire emergency.