Firefighting is an incredibly dangerous and demanding profession that requires firefighters to be equipped with the appropriate protective equipment to ensure their safety while fighting fires. The following are the primary Personal Protective Equipment (PPE) that firefighters use when responding to emergency situations:

1、Fire helmet: The helmet is designed to protect the firefighter's head from falling debris and high heat. It also has a visor that can be flipped up or down to protect the firefighter's face from flames.

2、Fire-resistant gloves: Fire-resistant gloves are designed to protect the firefighter's hands from heat, flames, and sharp objects. These gloves are typically made of materials such as Kevlar, Nomex, or leather.

3、Fire-resistant coat and pants: Fire-resistant coats and pants are designed to protect the firefighter's body from high heat and flames. They are typically made of materials such as Nomex, Kevlar, or a combination of both.

4、Self-contained breathing apparatus (SCBA): An SCBA is a device that provides firefighters with a supply of clean air to breathe while inside a burning building. The device includes a face mask and a tank of compressed air.

5、Fire-resistant boots: Fire-resistant boots are designed to protect the firefighter's feet from heat, flames, and sharp objects. They are typically made of materials such as leather or rubber.

6、Flash hood: The flash hood is a piece of PPE that protects the firefighter's head, neck, and ears from high heat and flames.

7、Fire-resistant undergarments: Fire-resistant undergarments are worn underneath the firefighter's coat and pants to provide an extra layer of protection from heat and flames.

In conclusion, firefighting is a dangerous profession that requires firefighters to be equipped with the appropriate PPE to ensure their safety while fighting fires. The PPE listed above are essential components of a firefighter's gear and are designed to protect them from the extreme heat and flames they may encounter during emergency situations.