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Terms and Definitions

Terms and Definitions

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Mass Transfer
As used in the fire literature, the movement of heat by burning firebrands.

Master Fire Chronology
A chronology of all documented fire dates in a designated area determined by crossdating.

Mean Fire-Return Interval
(or mean fire-free interval, or mean fire interval) Arithmetic average of all fire-return intervals for a specific site for a specific interval of time.

Micro-Remote Environmental Monitoring System (Micr
Mobile weather monitoring station. A Micro-REMS usually accompanies an incident meteorologist and ATMU to an incident.

Mineral Soil
Soil layers below the predominantly organic horizons; soil with little combustible material.

Mobilization
The process and procedures used by all organizations, federal, state and local for activating, assembling, and transporting all resources that have been requested to respond to or support an incident.

Modular Airborne Firefighting System (MAFFS)
A manufactured unit consisting of five interconnecting tanks, a control pallet and a nozzle pallet, with a capacity of 3,000 gallons, designed to be rapidly mounted inside an unmodified C-130 (Hercules) cargo aircraft for use in dropping retardant on wildland fires.

Mop-up
To make a fire safe or reduce residual smoke after the fire has been controlled by extinguishing or removing burning material along or near the control line, felling snags or moving logs so they will not roll downhill.

Multi-Agency Coordination (MAC)
A generalized term which describes the functions and activities of representatives of involved agencies and/or jurisdictions who come together to make decisions regarding the prioritizing of incidents, and the sharing and use of critical resources. The MAC organization is not a part of the on-scene ICS and is not involved in developing incident strategy or tactics.

Mutual Aid Agreement
Written agreement between agencies and/or jurisdictions in which they agree to assist one another upon request, by furnishing personnel and equipment.

Smoke and fire in a stand of trees.

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