Three firefighters die after deploying shelters in Colorado wildfire

Five firefighters battling a fast-moving wildfire in Colorado deployed their fire shelters when escape routes were cut off. Three were overcome by the flames and died, while two others were injured and taken to hospitals. Fire shelters are mandatory equipment for crews working in rugged terrain where conditions can change rapidly.

The devices are designed to protect against intense heat and trap breathable air as flames pass overhead.

Shelter design and limits The shelters are made of aluminum foil, silica fabric and fiberglass layers. Their effectiveness depends on exposure duration and other environmental factors, according to Shawn Steber with the U.S. Forest Service's National Technology and Development Program.

Officials said the equipment has saved hundreds of lives historically, but they emphasize that escape routes and safety zones remain the primary defense. Steber noted that crews are trained to avoid entrapment whenever possible.

Training and deployment procedures Wildland firefighters receive annual training on shelter use, including practice during hikes and fire-line construction. They are instructed to deploy the shelters in 30 seconds or less and as early as possible when needed.

John Montrastelle, a sales manager with Anchor Industries, said recent design changes have improved stability when deployed. The shelters now feature a one-piece floor, better hold-down handles and reduced bulk.

Recent deployment statistics From 2021 to 2025, four shelter deployments occurred nationwide, including two last year. In 2020, 30 deployments took place, almost all in California. A full investigation into the circumstances of last weekend's deaths is underway. Montrastelle said he hopes the review will produce guidance for crews facing similar conditions.