Defect on the surface of a tree resulting from a wound where healing has not re-established the normal cross-section.

Prescribed burning early in the dry season before the leaves and undergrowth are completely dry or before the leaves are shed, as an insurance against more severe fire damage later on.

A system of interactive computer programs for modeling fuel and fire behavior, comprised of two systems: BURN and FUEL. 

A component of NWCG standards. They enable consistent and uniform performance by personnel mobilized by position under NIMS-ICS principles. Position qualification requirements include training, experience, physical fitness, position currency and incident position descriptions (duties and responsibilities).

Rapid increase in water flow which may result in a corresponding pressure rise.

That part of each 24-hour period when fires spread most rapidly; typically from 10:00 AM to sundown.

A set of physics and empirical equations that form a mathematical representation of the behavior of fire in uniform wildland fuels.

A task given to a person or team to perform based on operational objectives defined in the IAP.

Spacing of personnel while performing line construction activities.

Approved protection suit worn for smokejumping.