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2025 WOR: Sierra Fire Tree Strike – August 8, 2015

Letter to LeadershipDay 1  |  Day 2  |  Day 3  |  Day 4  |  Day 5  |  Day 6  |  Day 7  

 

Incident Summary:

The Sierra Fire was ignited by lightning on August 8, 2015, on the Lake Tahoe Basin Management Unit of the Forest Service in California. During the initial attack response, an organized crew (OC) was mobilized to the fire to assist finishing handline and mopping up the fire. Numerous hazard trees were identified within the fire perimeter. They were discussed at length and steps were taken to assess and mitigate these hazards while working the fire. While finishing the last piece of line for the shift, a weakened hemlock tree, a known hazard tree, fell and struck two firefighters.

Image
Wildland firefighter smiles at camera.

 Michael "Mikey" Hallenbeck died from injuries sustained in the accident. The second firefighter was treated at the ER and released. Mikey was very proud that he had taken the initiative to train to become a firefighter. It was his first season as an OC-36 crew member and crew members recalled his enthusiasm for this opportunity to gain firsthand experience.

Because hazard trees are so common, exposure to them feels normal. However, the Sierra Fire and many other similar tragic incidents reveal that our exposure to them should be anything but normal. Normalization of exposure to these hazards can foster a bias for action. During the Week of Remembrance, we owe it to Mikey and all the firefighters who have gone before us to have open and honest conversations about how and when we engage.

Discussion:

  • What environmental, fire, and human conditions influence normalization of exposure to hazard trees? How can we better acknowledge and talk about these conditions before engaging?
  • Who is informally or formally empowered to challenge what is “normal?"
  • As a leader, how do you create space for everyone to share their perspective?
  • What tools can you use to help you stop, think, talk, and re-evaluate your options?
  • What are all the options you have to safely mitigate a hazard tree?

 

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