The Postal Service responded to the 2001 anthrax attacks by adding biohazard detection equipment to large sorting facilities and creating dangerous-mail response teams. Specially-trained inspectors wear hazardous-materials suits, such as this, when gathering evidence in potentially contaminated environments.
To thwart future anthrax-related attacks, the U.S. Postal Service has implemented a Biohazard Detection System (BDS) to help protect the mail. The BDS is an automated process that uses exclusively designed technology to collect and test air samples for biological toxins.
Photograph courtesy of the United States Postal Inspection Service, Dangerous Mail Investigations and Homeland Security Group