(CIT): The Emergency Preparedness and Biodefense Interest Group is pleased to announce that Colonel James M. Madsen will give a lecture entitled Chemical Warfare Agents: An Overview. Colonel Madsen is a scientific adviser to the Chemical Casualty Care Division and the course director of the Hospital Management of Chemical, Biological, Radiologic, Nuclear and Explosive course of the US Armed Forces. EPBIG is a scientific exchange on topics related to the public health challenges posed by natural and man-made emergencies, including acts of terrorism.