The evaluation of the fire to determine a course of action for suppression.

An area that, in relation to wildland/urban fire, has a set of conditions that provides the opportunity for fire to burn from wildland vegetation to the home/structure ignition zone.

The transformation of a liquid to its gaseous state; heat is released by the liquid during this process.

Pilot who is designated to be second-in-command of an aircraft during flight time.

A combination hoe or cutting tool and rake, with or without removable blades.

The ICS section responsible for providing facilities, services, and supplies in support of an incident and personnel well being. The logistics section may include units and branches.

Medical Unit staff are responsible to plan for and provide health and medical services for incident personnel.

Violent convection caused by a large continuous area of intense fire. Often characterized by destructively violent surface indrafts, near and beyond the perimeter, and sometimes by tornado-like whirls.

Any sudden acceleration in rate of spread or intensification of the fire. Unlike blowup, a flare-up is of relatively short duration and does not radically change existing control plans.

Sudden increase in fireline intensity or rate of spread of a fire sufficient to preclude direct control or to upset existing suppression plans. Often accompanied by violent convection and may have other characteristics of a fire storm.