
WASHINGTON — In recent months, federal and state homeland security officials have become increasingly concerned that terrorists and other groups might attempt to imitate the insurgents in Iraq and employ chlorine-bombs and other chemical weapons within the United States. Even before insurgents in Iraq began detonating trucks carrying bombs combining conventional explosive with industrial chlorine, U.S. government and non-government experts had identified the United States as potentially vulnerable to terrorist attacks against chemical plants or rail tankers transporting toxic chemicals such as chlorine. In their “National Planning Scenarios” (pdf file), analysts at the Department of Homeland Security (DHS) identified a […]