There has been intensive covert research in many countries, in an attempt to produce modifications in disease-producing viruses. Russia and Iraq have been at the forefront of these researches. There have emerged several major threats to mankind in the form of lethal viruses and bacteria. Among these are smallpox (variola), hemorrhagic viruses such as Ebola, and the encephalitis viruses. Ebola is extremely susceptible to sunlight, heat and drying. It is difficult to handle and deliver while still viable and infectious. Nonetheless, it is highly lethal and effective in large enclosed spaces such as auditoriums (?) and, probably, stadiums. Most of...