The area where investigator(s) begin their on-scene search for the general origin area.

Map showing the time required for the initial attack crew to reach various parts of a protection unit from specified positions.

Specific, achievable, measurable, time-limited results to be achieved through land management practices, either through a description of a desired condition or the degree of desired change in an attribute.

Individuals within ICS organizational units that are assigned specific managerial responsibilities, e.g., staging area manager or camp manager.

Reaction of a rotor downdraft against the ground surface, forming a "ground cushion" that increases lifting capability of that section of air.

Colored flags attached to metal or plastic pins to designate the location of fire pattern indicators, evidence, and other items of interest.

Radio frequency range from 30 MHz to 299 MHz. The sub-bands most commonly used by fire are: VHF-FM Lo band: Frequency Modulation 30 MHz - 80 MHz, of which fire frequencies are between 30 MHz and 50 MHz. VHF-FM Hi band: Frequency Modulation 150 MHz - 174 MHz. This is the most widely used band by fire agencies. VHF-AM: Amplitude Modulation. This band is commonly referred to as the "Victor or VHF" band. The frequency range is from 118 MHz to 136 MHz. The only authorized use of this band is for aviation. The FAA controls and assigns all frequencies within this sub-band. 

The message center is part of the incident communications center and is collocated or placed adjacent to it. It receives, records, and routes information about resources reporting to the incident, resource status, and administrative and tactical traffic.

The management structure, usually shown in the form of an organization chart of the persons and groups having specific responsibilities in fire suppression.

Plant community maintained by periodic fires.