A greater risk than flames crossing firebreaks is firebrands or cinders - flaming bits of bark, small branch, clumps of pine needles - being carried aloft by he

A greater risk than flames crossing firebreaks is firebrands or cinders - flaming bits of bark, small branch, clumps of pine needles - being carried aloft by heat and falling past the firebreak into combustible dry grass or other fuel, or onto a wooden deck next to wooden siding of a house, or in a rain gutter full of pine needles and twigs next to a composition shingle roof edge.