“Fire propagation” radicals (OH, H, and O) are essential elements in the propagation of the fire. Stat-X suppresses the fire by chemical interference with these free radicals within the fire zone – thus interrupting the on-going fire reaction by the interaction of the potassium radicals which are the main active component of Stat-X aerosol with the fires free radicals. In effect, the potassium radicals produced “ties up” the free radicals produced by the fire inhibiting their ability to recombine.