Terrorists may choose to silently spray biochemical agent from an aerosol can, sprinkle it from a small plane, or disperse the deadly substance from the exhaust of a car. This is not shake and bake weaponry, but if you have some technical skills, then you can produce them cheaply.
Terrorism is in decline.
More people die from drowning than terrorism, but we're not restructuring society for 500 deaths in bathtubs. Such weapons may be part of the next wave in terrorism, national security analysts say. Fifteen thousand raucous hockey fans fill a downtown stadium on a Friday night to see the Washington Capitals take on the Philadelphia Flyers. But shortly after the 7 p.m. face-off, terrorists trigger an explosive charge that showers poisonous chemicals over the crowd. Washington, D.C.'s proud new stadium becomes a hellhole of death and confusion.