 ![Evolution of firehose instability. (a) Energy in perpendicular magnetic fluctuations, $\langle | \delta {\mbox{\boldmath{$B$}}}_\perp |^0 \rangle$, whose saturated value $\propto$$S^{0/0}$ (inset). (b) Firehose stability parameter, $\langle \Lambda_{\rm f} \rangle$, whose maximum value $\propto$$S^{0/0}$ (inset; see text for explanation).[]{data-label="fig:fhs-boxavg"}](fig0a.eps "fig:"){width="0.0cm"} ![Evolution of firehose instability. (a) Energy in perpendicular magnetic fluctuations, $\langle | \delta {\mbox{\boldmath{$B$}}}_\perp |^0 \rangle$, whose saturated value $\propto$$S^{0/0}$ (inset). (b) Firehose stability parameter, $\langle \Lambda_{\rm f} \rangle$, whose maximum value $\propto$$S^{0/0}$ (inset; see text for explanation).[]{data-label="fig:fhs-boxavg"}](fig0b.eps "fig:"){width="0.0cm"}  ![Spatial structure of the 