In the arsenal of terrorism, biological weapons, particularly anthrax, have many compelling characteristics. In this program, leading experts from both the U.S. and the former Soviet Union provide chilling commentary on why bioterrorism is likely to become a global threat, citing recent incidents as well as the once-classified results of a 1966 joint U.S. Army/CIA bio-weapon experiment conducted in the New York City subway. Dramatizations of simulated terrorist attacks and laboratory techniques bring home the relative ease of manufacture and extreme lethality of these weapons. (49 minutes)