Firefighters use a variety of knives, including folding knives, fixed blade knives, and rescue knives. Folding knives are compact and easy to carry, making them a popular choice for firefighters. They typically have a serrated edge, which is useful for cutting through thick materials such as rope or fabric. Fixed blade knives are larger and more durable than folding knives, and are often used for heavy-duty tasks such as cutting through metal or breaking windows. Rescue knives are specifically designed for emergency situations and typically feature a seatbelt cutter and glass breaker.