A neoprene tank designed for attachment to the landing skid frame of a helicopter. It has a capacity of 80 to 100 gallons (303 to 378 liters) of water or retardant.

The relative ease with which fuels ignite and burn regardless of the quantity of the fuels. Preferred to "inflammability."

Something that represents, promotes or enhances a desired outcome, being of positive value and contributing to the attainment of organizational goals. Benefits represent one end of the spectrum of outcomes from fire, with the opposite end being harm, loss or damage. 

Fire effects with positive monetary, social, or emotional value or that contribute, through changes in the resource base, to the attainment of organizational goals.

The distance from the centerline of the front axle to the centerline of the rear axle. For a tandem rear axle vehicle the center line is midpoint between the centers of the two rear axles.

Notice identified as either a NOTAM or Airmen Advisory containing information concerning the establishment, condition, or change in any component of, or hazard in, the National Airspace System, the timely knowledge of which is essential to personnel concerned with flight operations. 

In air pollution control, the concentration of air pollutants in a definite area during a fixed period of time prior to the starting up, or the stoppage, of a source of emission under control. In toxic substances monitoring, the average presence in the environment, originally referring to naturally-occurring phenomena. 

A char pattern that is created by the passage of wind around the trunk of a tree or pole-like object that creates vortices on the lee side and an area of stability.  The area of stability allows the heat and char pattern to rise higher on the lee side of the object.  Generally, the stronger the wind, the higher the wind vortex flame wrap will be.  White this is not a fire pattern indicator, it is a general indication of the direction of the wind at the time the pattern was created.

Fire department procedure of inspecting premises after extinguishment of fire, to insure that fire is completely out and unable to rekindle before returning control to owner or occupants.

Any ground vehicle capable of transporting a dozer, tractor, or other heavy piece of equipment.