Looking across the foothills of the Sierra Nevada Mountains, one of the regions hit hardest by the historic levels of tree mortality
A prescribed fire is lit with a mix of 3:1 diesel to gas. Historically, natural fires tended to burn in the West during summer and fall. Prescribed fires are conducted in the "shoulder seasons" on either end of summer when conditions are right as in Fall: wildlife has dispersed, the fire fuels are dry, and vegetation has deteriorated.
Prescribed fires are normally lit during autumn or spring, when conditions are right - not too hot or dry and with the right levels of moisture in the soil.
The prescribed fire burns thought the undergrowth, helping create a healthier forest.
The prescribed fire in the sierra forest reflects in Shaver lake.
A tree with bark beetle holes that has been designated for removal.
Franky and Sam Johnson outside their home, where a dead tree fell a few nights earlier.
Franky and Sam Johnson in there siting room.
Members of California's Tree Mortality Task Force point out the tunnels created by the insects inside a piece of bark.
A Tree Mortality Task Force crew of PG&E workers cut down dead trees in a residential area to protect power lines and other infrastructure.
A logger surveys an area designated by forest management for dead tree removal.
A logger cuts down a tree affected by the bark beetle outbreak.
Smoke rises from a prescribed fire on the edge of Shaver Lake, California.
Logged trees loaded up to be sent to the only mill left in the area, Sierra Forest Products.