Yes IMERT is in Illinois but IMERT has responded to other states for disasters. IMERT is medical team of doctors, nurses, paramedic's, and emt's. IMERT also has none medical members for different command type duties. For example if diaster struck and a medical team was needed and IMERT was called they would have members set up hospital type base to treat patient before transport to a hospital by land or air. The structure of IMERT is like the NRP, and NIMS are set up, Do not respond till called for. If a diaster is overwhelming for local responders then IMERT is called if to large for local and IMERT then federal help is called for. At first it was just for state of Illinois but after hurricane Katrina IMERT respondes to diasters in other states. Hope this helped if not just send a reply. Medic36411 just a old paramedic.