The Chemical Security Analysis Center within the Department of Homeland (DHS) Science & Technology Directorate is seeking sources to execute various components of a probabilistic risk assessment focused on the chemical supply chain. The Chemical Countermeasures Program Area will support this effort through the Chemical Infrastructure Risk Assessment (CIRA) program. The CIRA is a formal statistical risk assessment which will calculate the acute risk to human health and the economic consequences due to terrorist- initiated release of DHS Appendix A list of chemicals of interest in a point in the chemical supply chain. Sol. No. RFI-08-CIRA. Respond by May 19. Contact: Albert Dainton, 202- 254-6371, [email protected].