First Responder Anthrax Preparedness Act - Amends the Homeland Security Act of 2002 to direct the Secretary of Homeland Security (DHS), for the purpose of domestic preparedness for and collective response to terrorism, to: (1) make available surplus vaccines and antimicrobials, and vaccines and antimicrobials with short shelf lives, from the strategic national stockpile for administration to emergency response providers who voluntarily consent to such administration; (2) establish any necessary logistical and tracking systems to facilitate making such vaccines and antimicrobials available; and (3) distribute disclosures regarding associated risks to end users.

Directs the Secretary to: (1) conduct an 18-month pilot program to administer such vaccines and antimicrobials to emergency response providers, (2) select providers based in at least two states to participate in the program, and (3) provide to each participating provider disclosures and educational materials regarding the risks of any vaccine or antimicrobial administered and of exposure to anthrax.

Requires the Under Secretary for Intelligence and Analysis to: (1) support homeland security-focused risk analysis and assessments of the threats posed by anthrax from an act of terror; (2) leverage homeland security intelligence capabilities and structures to enhance prevention, protection, response, and recovery efforts with respect to an anthrax terror attack; and (3) share information and provide tailored analytical support on threats posed by anthrax to state, local, and tribal authorities, as well as other national biosecurity and biodefense stakeholders.