dr. krug, welcome. advisory disaster council. >> think you for the chance to speak to the on these important issues. healthe director of security at john hopkins school of public health where i'm a professor of public health. our mission is to protect people from disasters and to rebuild communities. i'll provide key areas that might colleagues and i consider vital response capabilities. the opinions expressed are my own and don't reflect john hopkins university. there is a range of public health threats that can occur without much warning. these include natural disasters, bombings, shootings, nuclear threats, and biological threats. whether theyreats, are viruses in china, were accidental, such as a viral strain released from a lab, or deliberate like smallpox and anthrax, and that is a big focus of my comments today. biological threats can reach from modest in size or could pose as global, catastrophic threats. first, we need to strengthen the health care system preparedness. that is the cap