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What does ROS, IC, etc stand for?

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Air ops
All aerial resources on the fire from air tankers to helicopters
ATGS
Air Tactical Group Supervisor, oversees all aerial firefighting ops.
Backfire
Fire set in front of a wildfire to burn off fuels and stop the fire.
Backburn See Backfire
Bambi Bucket
Collapsible bucket used to drop water or retardant on a fire
Balance
(The balance), the remaining units either on scene or en route
Complex
Two or more fires under a single Incident Commander (IC)
Crowning Fire
Fire that burns through the tops of trees, heavy brush is also capable
CWN
Call When Needed, air tanker on a 24 or 48-hour call back
Dozer
Bulldozer used to construct a line to prevent the fire from spreading
Dozer tender
Support vehicle, carries extra supplies (oil, tools, etc.) for the dozer
Extended Attack
Fire that will require extensive resources and time, typically >24 hr
Fire Shelter
Portable last resort for surviving a burn over.
Flank
The sides of the fire,
Flanking fire
Fire that spreads along the flanks instead of in the direction of the head
Flashy Fuels
Light fuels that ignite quickly, typically grass, leaves, etc.
Forward ROS
The forward movement of the fire, when stopped the fire is in a good place
Hand crew
A crew of 20 people who use handheld tools to construct a fire line
Head
The most rapidly spreading portion of a fire
Heavy Fuels
Large diameter fuels, down logs, timber, opposite of flashy fuels
Helispot
Take off and landing spot for a helicopter, either man-made or natural
Helitack
Fire crew that uses helicopters, all Cal Fire helos have Helitack crews
Hotshot
The elite of firefighting highly trained and go where no other units can
IC
Incident Commander, the person in charge of the fire
ICS
Incident Command System, the system used to manage all incidents
IMT
Incident management team, the team brought to manage large incidents
Initial Attack
The first attack on the fire to attempt to knock it down.
Ladder Fuels
Fuels that assist a ground fire in spreading to the canopy
Lead Plane
Aircraft that shows air tankers the drop and then leads them into it
Longline
A 100’-200’ line used to lower personnel (Henry 1) or supplies.
MAFFS
Modular Airborne Fire Fighting System, used when no tankers are available
Mop-up
The often-long process of ensuring the fire is 100% extinguished
Mutual Aid
Aid from one department to another in a time of need
Red Flag
Any fire that starts will spread quickly and rapidly, extra caution needed
ROS
Rate of Spread, slow (least severe), moderate, high, critical/dangerous
SEAT
Single Engine Air Tanker, not commonly used in our area
Size-up
Initial report of what happening including, size, weather, topography, ROS
Slopover
Fire that spreads outside control lines
Strike Team
See below for strike team types
Support WT
Water tender that only carries water, no pump, and roll,
Task Force
Pre-established group of resources often prepared for Red Flag days
Tactical WT
Water tender capable of pump and roll
Type 1 Airtanker
3,000 to 4,999 gallons (BAE-146, MD-87, P-3, C-130)
Type 2 Airtanker
1,800 to 2,999 gallons (P2V, DC-6)
Type 3 Airtanker
800-1,799 gallons (S2T, CL-215, CL-415)
Type 4 Airtanker
<800 gallons (SEAT)
Type 1 Engine
Structure fire engine, not designed for wildland, no pump, and roll
Type 2 Engine
Hybrid Type 1 and Type 3, might have pump and roll
Type 3 Engine
Engine designed for wildland fire, pump and roll required
Type 4 Engine
Similar to type 3, smaller but larger tank, pump, and roll
Type 5 Engine
Similar to a heavy-duty chassis outfitted for firefighting, pump, and roll
Type 6 Engine
Similar to Type 5, smaller and more maneuverable, pump and roll
Type 7 Engine
Similar to Type 6, less water capacity, pump, and roll
Type 1 Helicopter
700-2,500 gallons (S-64, S-70, UH-60, KMAX, CH-47)
Type 2 Helicopter
300-699 gallons (UH-1, B-412, B-212, B-205)
Type 3 Helicopter
<300 gallons (B-407, AS-50, H-125, B-206, MD-500)
VLAT
Very Large Air Tanker, capacity over 8,000 gallons (DC-10, 747)
WUI
Wildland Urban Interface, where the wildland meets suburban area
Water Tender (WT)
Vehicle that carries >1000 gallons of water

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