Firefighting agents are substances used to extinguish or control fires. They can be classified into several categories, including water, foam, dry chemicals, and gases. Each type of agent works differently; for example, water cools the fire, while foam smothers it by cutting off oxygen. These agents are essential in various firefighting scenarios, from residential fires to industrial blazes. Common firefighting agents include carbon dioxide, dry powder, and wet chemical agents, each designed for specific types of fires, such as those involving flammable liquids or electrical equipment. Proper selection of the agent is crucial for effective fire suppression.