1. A method for identifying the presence of an attack on an area by one or more nuclear, chemical and biological agents which includes: choosing one or more modeling locations within the area for modeling scenarios for one or more chemical, biological or nuclear agents; performing simulations for the modeling locations to determine simulation data indicative of the symptomatic effects of one or more concentrations of one or more chemical, nuclear or biological agents at the modeling locations; obtaining actual syndromic data comprising human signs and/or human symptoms from data sources within said area; and comparing said actual syndromic data with simulation data to determine the existence or nonexistence of correlation therebetween.