Rocky Mountain Complex Incident Management Team 3

Total acreages: 5,749 acres
6% containment
699 personnel

Building fireline takes all kinds of kinds. On the southeast side of the fire, crews continue to strengthen the fireline and gradually move north along the eastern side. Multiple handcrews and a variety of heavy equipment are working together to advance the fireline.

Taskforce leaders and heavy equipment bosses help coordinate this work. Medical personnel accompany firefighters to keep everyone safe. A field observer follows the progress of the fireline and collects information on the fuels, fire behavior, and on-site weather. #DerbyFire#FireYear2025

Photo: A dozer creates fireline by scraping away plants on the surface of the ground. Where fire creeps along the forest floor, this bare soil creates a barrier that the fire can’t move across without any flammable material to burn. S.Rawding/Derby Fire.