The period of time during which a fire danger rating value is considered valid or representative for administrative or other purposes. Normally it is 24 hours extending from midnight to midnight.

A lookout point that must be staffed to meet planned minimum seen area coverage in a given locality. For that reason, continuous service is necessary during the normal fire season and the lookout (person) is not sent to fires.

Term used in flight planning/following to document actual time spent flying between points.

Maximum pressure a centrifugal pump will attain when water flow is clamped or shut off.

The collected technical fire protection standards prepared by various committees of the National Fire Protection Association and published annually in 15 volumes.

Burning slash that has been piled into long continuous rows. Also includes wildfire in vegetation planted to protect improvements or agriculture.

A process used to improve the safety of personnel on the fireline, which emphasizes tools and tactics available to prevent being trapped in a burnover situation. This process includes appropriate decision making through risk management, application of LCES, use of pre-established trigger points, and recognition of suitable escape routes and safety zones. 

A release of combustion gases and aerosols into the atmosphere.

A low expansion foam type with stable bubble structure and slow drain time which is used primarily for resource and property protection.

A breeze (wind) blowing inland from the sea generally during daytime hours.