Development of new aboveground plants from surviving plant parts, such as by sprouting from a root crown or rhizomes. Even if plants form their own root system, they are still genetically the same as the parent plant.

Documented, satisfactory performance in a specified position needed to qualify for another (usually higher level) position. Required experience cannot be challenged.

A combustible or non-combustible object that displays differential damage or deposits on opposing sides due to the passage of the fire and indicates the direction of fire progression at that location.  One of the 11 NWCG categories of fire pattern indicators.

Setting fire inside a control line to consume fuel between the edge of the fire and the control line.

A fire set along the inner edge of a fireline to consume the fuel in the path of a wildfire or change the direction of force of the fire's convection column.

A surface active agent; any wetting agent. A formulation which, when added to water in proper amounts, will materially reduce the surface tension of the water and increase penetration and spreading abilities of the water.

An incendiary mixture with a jelling agent used in flamethrowers and bombs.

A representation of the vegetative cover and fuel in a base area. Used in the calculation of fire danger rating.

A resource that includes a dozer, its transportation unit and a standard complement of personnel for its operation.

The physical, biological, and ecological impacts of fire on the environment.