As if the horrifying events of Sept. 11, 2001, were not enough, we now must cope with the fact that terrorists could strike again this time perhaps with biological or chemical weapons. How safe are we? Should we be digging bomb shelters? Buying antibiotics and gas masks? What should we tell our children, and how can we return to our normal lives? What will "normal" look like? Read our special feature package on bioterrorism.