A counter-terrorism, reactive personnel protection system which detects the presence of a destructive object as it approaches a designated personnel target along an intersecting path. The system comprises a modular replacement exhaust system having a novel header pipe and muffler. The SiAlON-containing ceramic material preferably contains a two-phase SiAlON, silicon carbide, and a conductive phase that is one or more of titanium nitride, tantalum nitride, zirconium nitride, and titanium carbide. 1 to 30 wt %, based on the total weight of composite material, the magnetic ferric oxide is gamma-Fe2O3, Fe3O4, complex obtained from gamma-Fe2O3 by partial reduction, or complex obtained from Fe3O4 by partial reduction. The first electrodes are disposed beside the first portion, and the second electrodes are disposed beside the second portion. The data and energy transmission takes place by means of electromagnetic field forces.