This is a summary document that describes the functions of the Illinois Mobile Emergency Response Team: "The Illinois Mobile Emergency Response Team (IMERT) is a volunteer program that trains emergency medical personnel to respond to mass casualty incidents (MCIs). IMERT teams are deployed to MCIs, including those involving weapons of mass destruction (WMD). IMERT teams assist Illinois in state-declared disasters by providing treatment to casualties for up to seventy-two hours or until federal support arrives. It specifically trains physicians and nurses with trauma or emergency medicine backgrounds to enable them to respond to MCIs that may involve WMD."
Homeland Security Exercise and Evaluation Program: https://hseep.dhs.gov/pages/HSEEP_Home.aspx