> For the complete documentation index, see [llms.txt](https://docs.miltechsimulations.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.miltechsimulations.com/miltech-mission-hub/developer-sdk/activities-setup/firefighting.md).

# Firefighting

You can integrate your aircraft's own firefighting method with the Mission Hub. You will need to implement the 3D model and VFX yourself.

To interact with the mission system, Lvars are used. The specific implementation differs depending on which firefighting method your aircraft uses:

{% tabs %}
{% tab title="Helicopter Bucket" %}

#### Lvars to set

<table data-header-hidden data-full-width="false"><thead><tr><th width="326.79998779296875">LVar</th><th>Description</th></tr></thead><tbody><tr><td><strong>MMH_COMPATIBILITY_FIREFIGHTING</strong></td><td>Always set to 1</td></tr><tr><td><strong>MMH_BAMBI_READY</strong></td><td>Set to 1 when the bucket is ready to be used (i.e. slung under the helicopter)</td></tr><tr><td><strong>MMH_BAMBI_FULL</strong></td><td>Set this to 100 when the bucket has been filled</td></tr></tbody></table>

#### Lvars to read

<table data-header-hidden data-full-width="false"><thead><tr><th width="326.79998779296875">LVar</th><th>Description</th></tr></thead><tbody><tr><td><strong>MMH_BAMBI_FULL</strong></td><td><p>Use this to show/hide water inside of the bucket.</p><p>0 = bucket empty<br>100 = bucket full</p></td></tr><tr><td><strong>MMH_WATER_RELEASE</strong></td><td><p>Use this to drive when your water drop vfx is active.</p><p>0 = No water being dropped<br>100 = Water being dropped</p></td></tr></tbody></table>
{% endtab %}

{% tab title="Helicopter Tanks" %}

#### Lvars to set

<table data-header-hidden data-full-width="false"><thead><tr><th width="326.79998779296875">LVar</th><th>Description</th></tr></thead><tbody><tr><td><strong>MMH_COMPATIBILITY_FIREFIGHTING</strong></td><td>Always set to 1</td></tr><tr><td><strong>MMH_FIREFIGHTING_WATER_TANK</strong></td><td>Always set to 1</td></tr><tr><td><strong>MMH_BAMBI_READY</strong></td><td>Set to 1 when the bucket is ready to be used (i.e. slung under the helicopter)</td></tr><tr><td><strong>MMH_BAMBI_FULL</strong></td><td>Set this to 100 when the bucket has been filled</td></tr></tbody></table>

#### Lvars to read

<table data-header-hidden data-full-width="false"><thead><tr><th width="326.79998779296875">LVar</th><th>Description</th></tr></thead><tbody><tr><td><strong>MMH_BAMBI_FULL</strong></td><td><p>Use this to show/hide water inside of the bucket.</p><p>0 = bucket empty<br>100 = bucket full</p></td></tr><tr><td><strong>MMH_WATER_RELEASE</strong></td><td><p>Use this to drive when your water drop vfx is active.</p><p>0 = No water being dropped<br>100 = Water being dropped</p></td></tr></tbody></table>
{% endtab %}

{% tab title="Airplane Scoop (2024 only)" %}
For MSFS2024, you can make aircraft compatible with the mission hub by setting up the native water drop system. We monitor the following simvars:

* LIQUID DROPPING SCOOP OPEN VALUE
* LIQUID DROPPING TANK TOTAL WEIGHT
* LIQUID DROPPING TANK TOTAL CAPACITY
* LIQUID DROPPING TOTAL DROPPED FLOW

See: <https://docs.flightsimulator.com/msfs2024/html/5_Content_Configuration/Careers/Aerial_Firefighting.htm#simvars>
{% endtab %}
{% endtabs %}


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