Person whose principal function is fire suppression.

An agent that extinguishes the flaming and glowing phases of combustion by direct application to the burning fuel.

Applies to radio frequencies primarily used for air operations.

Stage of growth or degree of flammability of vegetation that forms part of a fuel complex. Herbaceous stage is at times used when referring to herbaceous vegetation alone. In grass areas minimum qualitative distinctions for stages of annual growth are usually green, curing, and dry or cured. 

The 24-hour clock system where midnight is 2400, one minute after midnight is 0001 and progresses to 2400 daily.

The fuels that support the flaming front of the moving fire.

Total allowable weight of a loaded aircraft for takeoff or landing, adjusted for altitude differences.

Mechanically and electrically operated hook attached to the bottom of a helicopter to which a sling load is attached.

A method of suppression in which the control line is located some considerable distance away from the fire's active edge. Generally done in the case of a fast-spreading or high-intensity fire and to utilize natural or constructed firebreaks or fuel breaks and favorable breaks in the topography. The intervening fuel is usually backfired; but occasionally the main fire is allowed to burn to the line, depending on conditions. 

A concise statement that outlines what individuals must know in order to be successful for a given assignment. The intent communicates three essential pieces of information:

Task - What is the goal or objective
Purpose - Why it is to be done
End state - How it should look when successfully completed