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NWCG Glossary of Wildland Fire (PMS 205)

Term Steward Status Definition
tractor ETSC Equipment/Technology Subcommittee Archived A rubber tired or tracked rider-controlled automotive vehicle, used in wildland fire management for pulling a disk or a plow to construct fireline by exposing mineral soil.
tractor plow ETSC Equipment/Technology Subcommittee Approved A steel tracked vehicle with or without a front mounted blade equipped with a plow for exposing mineral soil. Sometimes a tractor plow with a front mounted blade is referred to as a dozer plow.
traffic pattern AMC Aviation Management Committee Approved Traffic flow that is prescribed for aircraft landing at, taxiing on, and taking off from, an airport. Usual components of a traffic pattern are upwind leg, crosswind leg, downwind leg, base leg, and final approach.
trail drop AMC Aviation Management Committee Approved An unbroken line of retardant used for constructing a retardant line.
trailer FISC Fire Investigation Subcommittee Approved Combustible material, such as rolled rag, blankets and newspapers, or flammable liquid, used to spread fire from one area to others; usually used in conjunction with an incendiary device.
trainee PMC Fire Planning Management Committee, QMC Qualifications Management Committee, QSSC Qualifications Systems Subcommittee, LMC Logistic and Equipment Management Committee Approved An individual who has met all required training and position experience for a specified position and is approved by their home unit's certifying official, to initiate a performance based training assignment in order to become qualified in the position.
trainer/coach PMC Fire Planning Management Committee, QMC Qualifications Management Committee, QSSC Qualifications Systems Subcommittee, LMC Logistic and Equipment Management Committee Approved A position-qualified individual who provides instruction to a trainee in the classroom, on-the-job, or on an incident. While many of the requirements of the trainer/coach are similar to the evaluator, it is important that the roles of training and evaluation remain separate. 
training facility UIB Unit Identifier Board Approved An organizational unit limited to a training center that coordinates the delivery of national or geographic area/regional training.
transfer of command wfnwcgorg:ICSC Approved The ICS management process in which the on-scene incident commander at a specified time hands off command responsibilities to the incident commander that will be taking over incident command.
transition FDSC Fire Danger Subcommittee Approved In the 1978 version of NFDRS, the herbaceous stage when herbaceous fuel moisture is between 120% and 30%.
transition zone FISC Fire Investigation Subcommittee Approved Area of change between advancing, lateral, and backing vectors.
translational lift AMC Aviation Management Committee Approved Lift that is gained when a helicopter translates from a hover into forward flight; additional lift increases with increasing airspeed and is derived by the rotor system moving into undisturbed air.
transport wind speed IWSC Incident Weather Subcommittee Approved A measure of the average rate of the horizontal transport of air within the Mixing Layer. May also be the wind speed at the final height of plume rise. Generally refers to the rate at which emissions will be transported from one area to another.
transportation map GISC Geospatial Information Subcommittee Approved Base map of the planning unit showing all roads, trails, heliports, and airfields existing and programmed for construction.
travel time FBC Finance/Business Management Committee Approved Compensable time en route to or from an emergency incident.
travel time map IOSC Incident Operations Subcommittee Archived Map showing the time required for the initial attack crew to reach various parts of a protection unit from specified positions.
treatment acres PIC Public Information Management Committee, EPSC Education & Prevention Subcommittee Approved Acreage of treatment polygon as calculated with GIS
treatment category PIC Public Information Management Committee, EPSC Education & Prevention Subcommittee Approved Describes major class of treatment.
treatment identifier PIC Public Information Management Committee, EPSC Education & Prevention Subcommittee Approved Unique identifier for fuels treatment polygon(s).
treatment identifier database PIC Public Information Management Committee, EPSC Education & Prevention Subcommittee Approved The database containing additional information related to the treatment identifier
treatment name PIC Public Information Management Committee, EPSC Education & Prevention Subcommittee Approved The name of the fuels treatment
treatment status PIC Public Information Management Committee, EPSC Education & Prevention Subcommittee Approved Status of the fuels treatment polygon(s).
treatment type PIC Public Information Management Committee, EPSC Education & Prevention Subcommittee Approved Describes the kind of treatment work. Type is more specific than treatment category.
trench IOSC Incident Operations Subcommittee Approved A small ditch often constructed below a fire on sloping ground (undercut or underslung line) to catch rolling material.
triage EMSC Emergency Medical Subcommittee Approved The sorting of patients (as in an emergency room) according to the urgency of their need for care.
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