In 2001, anthrax spores were deliberately sent to multiple targets via the U.S. Postal System. In response to the attacks, several emergency responders began a grassroots advocacy program called Project Equal Immunization Policies & Practices (EQUIPP). Coinciding with the Obama administration’s authorization of the First Responder Anthrax Preparedness Act, Project EQUIPP pushed for the deployment of surplus anthrax vaccine doses stored in the Strategic National Stockpile. This idea was met with bipartisan Congressional support, resulting in the First Responder Vaccine Initiative (FRVI).