Ladder Company Operations: The Four Duties of TBE, Vent, Entry & Search
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The ladder company is the force multiplier of the structural firefighting team. While the engine company advances the attack line, the ladder company is simultaneously performing four critical functions: truck-based entry, ventilation, search and rescue, and utility control. In well-trained departments, these four duties happen at the same time the first water hits the fire. This guide covers ladder company operations, apparatus positioning, and the functions that define the truck company mission.
Jump to:Truck-based entry (TBE) · Aerial positioning · The four duties · Ventilation operations · Search assignments · Forcible entry · Utility control · Salvage and overhaul · Ladder company tools · FAQ
The Truck Company Mission
In its simplest form, the ladder company exists to do everything the engine company cannot do while it is advancing the hoseline. The engine company is committed to water — positioning, supply, and attack. The truck company is committed to access, life safety, and tactical support. Neither function is secondary to the other. A working fire without a coordinated truck company assignment is a fire being fought with one hand tied behind your back.
The truck company mission varies by department structure. In departments without a dedicated ladder truck, engine companies must divide truck functions among themselves. In departments with full truck companies, the division of labor is clear. Either way, the functions must be assigned and performed.
Aerial Apparatus Positioning
Correct aerial positioning takes priority over proximity to the front door. An aerial that cannot reach its operating position because it is blocked or too close to the building is useless.
General positioning principles
- Leave the front of the building for the aerial. The first-due engine should pull past the structure or take an offset position to leave the sweet spot in front available for the aerial apparatus.
- Spot for the worst-case need. Position for the floor with the most people at risk, or the highest floor involved. You can always reach lower floors; you cannot extend beyond the aerial's maximum reach from a bad spot.
- Ground conditions must support outrigger deployment. Soil, slopes, covers over vaults or utilities, and soft shoulders can all compromise outrigger stability. Never deploy outriggers over suspected underground utilities without verification.
- Consider overhead obstructions. Power lines, trees, and overhead structures can limit or eliminate aerial operation. Survey the overhead before spotting.
- Leave an escape route for the apparatus. Do not box the aerial in. If conditions deteriorate, the apparatus must be able to move.
Aerial reach and scrub area
The aerial's working envelope (the area it can reach from its spotted position) is defined by its maximum working length, horizontal rotation, and elevation angle. The "scrub area" is the window on the building face that the aerial can cover from a given spot. Use the Aerial Ladder Reach Calculator to determine reach and optimal spotting distance for your specific apparatus and building height.
The Four Duties: VEIS and Beyond
Different departments use different acronyms for truck functions. The most common is LOVERS (Ladders, Overhaul, Ventilation, Entry/Forcible Entry, Rescue, Salvage) or the simplified four-function model: Truck-Based Entry, Ventilation, Entry/Search, and Utility Control. Regardless of the framework, these functions must be assigned at every working fire.
| Function | Mission | Priority timing |
|---|---|---|
| Forcible entry | Open the building for attack crew and search crew access | First — nothing else happens without access |
| Search | Primary search of all occupied areas simultaneously with attack | First — simultaneous with attack if possible |
| Ventilation | Remove heat and smoke to improve attack and search conditions | Coordinated with attack — not before water is ready |
| Utility control | Shut off gas, electricity, and other utilities to prevent secondary hazards | Early — but not before life safety functions are initiated |
| Salvage | Protect property from fire, water, and smoke damage | After life safety and stabilization |
| Overhaul | Confirm complete extinguishment; find and eliminate hidden fire | After knockdown and primary search complete |
Ventilation Operations
See the Fireground Ventilation Guide for complete coverage. The truck company's specific role:
Vertical ventilation
Cutting the roof is a truck company function. The saw goes on the truck. The truck crew goes to the roof. The critical requirements:
- The roof must be sounded before committing personnel to it
- The cut must be directly over the fire room, not over an uninvolved area
- Ladder placement for roof operations requires one ladder at the cut location and a second ladder for an alternate egress route
- The engine company must have water ready and be positioned to advance immediately when ventilation is established
Horizontal ventilation from aerial
The aerial can be used to break upper-floor windows for horizontal ventilation without requiring personnel on the roof. This is the preferred ventilation method when roof conditions are uncertain, when the fire floor is accessible by aerial, or when speed is more critical than precision of the vent opening.
