Prescribed burning or use of wildland fire during the photosynthetically-active growing season, where live fuel moistures are relatively high and the dominant vegetation, grasses, forbs, and herbaceous vegetation are fully greened.

A reference to a working fire.

A Fire Weather Watch is issued to advise of conditions which could result in extensive wildland fire occurrence or extreme fire behavior, which are expected to develop in the next 12 to 48 hours, but not more than 72 hours. In cases of dry lightning, a Fire Weather Watch may be issued for the next 12 hours. 

Term used by fire weather forecasters to alert forecast users to an ongoing or imminent critical fire weather pattern.

Total time required for a specified fuel component to be completely consumed.

Activities that lead to a safe, efficient, and cost-effective fire management program in support of land and resource management objectives through appropriate planning and coordination.

A predetermined maneuver which keeps an aircraft within a specified airspace while awaiting further orders.

A term used to indicate that the airtanker dropping mechanism is set to allow a programmed release of part or all of the load of fire retardant.

Science of deformation and flow of fire retardants and other liquids, especially of the cohesiveness bodies and stress-strain relationship of their particles.

Back step of a wildland or structural fire engine.