This shows the two common types of power saw used by the fire service. The chainsaw (lower) and the circular saw (above).  

This is a Stihl circular saw. Saws like this can be equipped with wood, metal or concrete cutting blades making them useful for forcible entry and ventilation at structure fires.

Another view of the saw. There is a fitting for a water line visible near the middle of the saw.

Top view.

The Partner K-12 circular saw is a popular brand of saw that has been around for many years. An example of its popularity is the fact that many firefighters call all circular saws K-12's regardless of the actual brand.

Another view of the K-12.

Another view.

Partner saws come with a metal box. The box is well organized and many departments store the saw in the box while it is on the apparatus.

This is another circular saw. Homelite was a very popular brand of power saw in the fire service from the early 1970's through the mid 80's

Top view.

Another angle of the Homelite.

This is a Dolmar Circular saw. This is an older saw, probably from the 70's. Dolmar is a brand rarely seen today.

Another view.

This is a medium sized chain saw. Homelite used to be a popular brand of powersaw. This is a popular size saw for fire department use and is appropriate for wildland and structure fire duties.

Close up of the power head.

This is another medium size chainsaw. Stihl is a popular brand with US fire departments. This size saw is useful for cutting small trees and brush on wildland fires but is also useful for forcible entry and ventilation on structure fires.

Another view of the saw. 

Top view of the powerhead.

Another close up.

This is a larger chainsaw used for wildland fires. It is capable of felling larger trees than the saws carried on most structure engines.

Close up of the saw.

Close up from another angle.

Another close up.

This is an older large chainsaw. Stihl has been a popular brand of powersaw for many years, this particular saw is probably from the late 70's.

Close up of the saw.

Another view.

The standard bar on chainsaws is straight, this is a bowbar. It is designed for cutting brush so it is usually only found on wildland fire apparatus.

Another medium size chainsaw. This is a Husqvarna which is another popular brand of powersaw.

Close up of the powerhead.

Another view.

Another view.

This is a Cutter Edge saw. It is a modified chainsaw with a special chain, guard and depth gauge specifically for use at structure fires. The depth gauge is used when ventilating a roof (cutting a hole to allow hot gasses and smoke to escape).

Close up of the saw.

View of the top.

Another angle.

This is a Ventmaster. It is another chainsaw like the Cutters Edge modified specifically for structure fires.

Another view of the Ventmaster.

Another angle.

This is a kit for maintaining a chain saw in the field, it includes fuel, oil, tools and extra chains. It also has supplies for felling trees.

Powersaws use a mix of oil and gasoline. Since they only hold a limited amount of fuel it is common to carry extra fuel. These are only examples as there are many different types of fuel and oil cans. 

This is a combination container known as a dolmar. The small compartment holds bar oil, the larger compartment holds fuel.

These are small aluminum bottles originally used for camping stoves. These are commonly used in the fire service since they are small and easily carried in a saw pack.