What should you do if the fire extinguisher is empty?

When faced with an empty fire extinguisher, the prudent course of action is to look for another extinguisher. A fire extinguisher that has been depleted will not be effective in suppressing a fire, which means that your primary goal should be to find a functioning extinguisher to combat the flames. This approach ensures that you have the best possible means to handle the fire safely and effectively.

It's important to note that using water instead of an extinguisher could potentially worsen the situation, especially if the fire involves flammable liquids or electrical components. Abandoning the area without taking steps to find another extinguisher neglects the responsibility to act in the face of a fire threat. Attempting to refill it oneself is also not advisable, as it requires specialized knowledge and equipment, and could lead to safety hazards.

Thus, searching for another operational fire extinguisher is the safest and most logical action to take in this scenario.