Fire started as a result of land occupancy for agricultural purposes, industrial establishment, construction, maintenance and use of rights-of-way, and residences, except equipment use and smoking.

A quantitative expression of the presence or absence of individuals of a species in a population; the ratio between the number of sample units that contain a species and the total number of sample units.

A layer of clouds whose ratio of dense sky cover to total sky cover is more than one-half.

An investigative technique that involves comparing same sized indicators within an indicator category at separate locations; looking for either differences or similarities in appearance.

An area of mountainous slope (characteristically the middle third), where the top of the radiation inversion intersects the slope. It typically experiences the least variation in diurnal temperatures and has the highest average temperatures and, thus, the lowest relative humidity. Its presence is most evident during clear weather with light wind. 

To insert a gate valve or some other device into a hose line.

The parts of a fire’s perimeter that are roughly parallel to the main direction of fire spread.

The parts of a fire's perimeter that are roughly parallel to the main direction of spread.

A card issued to persons showing their incident management and trainee qualifications to fill specified fire management positions in an incident management organization.

The incident level established by completing an incident complexity analysis considering the level of difficulty, severity, or overall resistance the incident or event presents to incident management or support personnel as they work to manage it; a categorization that helps leaders compare one type of incident or event to another.