This program also covers the basic science behind how fire extinguishers extinguish fire and where to store fire extinguishers for easy access. Storing fire extinguishers in areas that can be easily accessed. How to conduct fire extinguisher inspections and maintenance. Fire extinguisher inspection requirements by the NFPA. The science behind a fire and the various types of chemicals and substances that are used to extinguish fire. How to choose the best type of extinguishing agent for each of the four classes of fires. Knowing when to extinguish a fire and when you should call 911. Using the P.A.S.S (PASS) method to extinguish a fire. Escaping safely after attempting to extinguish a fire.