A fire weather fire danger product based on a thorough evaluation of all pertinent sources of meteorological, fire danger and resource information.

The cumulative effects of long-term drying on current fire danger.

Within designated blocks of land, planning the locations of firelines, fire camps, water sources, and helispots; planning transportation systems, probable rates of travel, and constraints of travel on various types of attack units; and determining what types of attack units likely would be needed to construct particular firelines, their probable rate of fireline construction, and topographic constraints on fireline construction. 

A siphon device used to fill an engine's tank when the water source is below or beyond the engine's drafting capability.

A two way radio unit on mobile apparatus (instead of base stations), usually semi-permanently attached to the apparatus.

In fire service terminology, that which is inspected and listed by recognized fire-testing agencies. The term as used in National Fire Protection Association standards means approval by the authority having jurisdiction, such as the fire chief, insurance inspection department, or other agency that enforces standards or regulations. 

The elastic-like force at the surface of a liquid, tending to minimize the surface area and causing drops to form. Expressed as Newtons per meter or dynes per centimeter (1 Newton/m=1,000 dynes/cm).

A probability that a crown fire may start, calculated from inputs of foliage moisture content and height of the lowest part of the tree crowns above the surface.

An intermediary pump for supplying additional lift in pumping water uphill past the capacity of the first pump.

To consume fuel during rapid combustion.