The substance, vivid against the grey smoke and charred landscape, is fire retardant—much of it a product called Phos-Chek that has been used by the US Forest Service since the 1960s.

The substance, vivid against the grey smoke and charred landscape, is fire retardant – much of it a product called Phos-Chek that has been used by the US Forest Service since the 1960s.

Aircraft that douse flames with water and bright red Phos-Chek fire retardant are a common sight in California. Aerial firefighting requires municipal, county, state and federal agencies to ...

Phos-Chek, made by the company Perimeter Solutions, is the retardant being used in Los Angeles County, and the most common one used in Canada. It's also the most-used fire retardant in the world ...

Aircraft that douse flames with water and bright red Phos-Chek fire retardant are a common sight in California. Aerial firefighting requires municipal, county, state and federal agencies to ...

Phos-Chek, made by the company Perimeter Solutions, is the retardant being used in Los Angeles County, and the most common one used in Canada. It's also the most-used fire retardant in the world, ...