In a psychrometer, the thermometer not covered with muslin which is used to determine air temperature.

A set of standardized procedures and practices that have been peer-reviewed and have received general acceptance by the profession.

The broad spectrum of activities and organizations providing operations, coordination, and support applied at all levels of government, using both governmental and nongovernmental resources to plan for, respond to, and recover from an incident, regardless of cause, size, or complexity.

All combustible materials below the surface litter, including duff, tree or shrub roots, punky wood, peat, and sawdust, that normally support a glowing combustion without flame.

A low expansion foam type with few and varied bubbles and rapid drain time which is used for rapid penetration and fire extinguishment.

An unfinished preliminary control line hastily established or constructed as an emergency measure to check the spread of fire.

Factors that make up fuels such as compactness, loading, horizontal continuity, vertical arrangement, chemical content, size and shape, and moisture content.

One of four designations of seasonal plant development used in the 1988 version of NFDRS.

Fuels above ground and their vertical continuity, which influences fire reaching various levels or vegetation strata.

Additional crew member required for accomplishment of the mission such as flight attendant, smokejumper/rappel spotter, cargo loadmaster, helicopter manager, etc. These positions usually do not require any Airman Certificate(s) or a flight physical. Referred to as a Qualified Non-Crew Member in the CFR.