This paper describes the paradigm that is being formulated at the University of New Mexico to model various aspects of high power microwave (HPM) interactions with networked infrastructure. The paradigm invokes the sequential use of modeling tools to characterize the propagation, coupling, and expected HPM field levels near critical assets using software packages designed for studying indoor propagation for wireless communications applications. At present we are considering two software packages that use ray-tracing techniques to predict power density levels in a complicated environment. These use conventional Maxwell's equation solvers to relate the electromagnetic fields predicted by the propagation routines to expected coupling cross sections of individual devices. We are planning on using recent developments in the area of wave chaos to better model the distribution of electromagnetic fields in an enclosure, and combine this effort with the results of the propagation and coupling calculations. Finally, we will compare the predictions of our hybrid modeling effort to measurements made in a networked test bed facility.