"In the fall of 2001, letters containing anthrax bacteria were sent through the U.S. mail. Twenty-two people were infected with anthrax. Five of them died, including two postal employees. The criminal investigation of those attacks continues. People were on edge. In the year immediately following the attacks, the U.S. Postal Inspection Service responded to approximately 17,000 incidents of suspicious substances. It became clear that postal inspectors needed additional tools to ensure rapid response capabilities to determine if a substance posed a threat."
Tech Beat (Summer 2006)