This Call will consist of the solicitation, receipt, and evaluation of both White Papers and Full Proposals. Phase 1 will consist of the solicitation, receipt, and evaluation of the White Papers (using standardized DHS Chemical Biological Division Project Proposal Form format) from potential performers. Entries in the various sections of the Project Proposal Forms (White Papers) should be concise and conform to the specified formatting and word count limitations (see OBAA Attachment A). No formal transmittal letter is required for the Phase 1 responses. Once the white paper peer/scientific review down-selection process has been completed, offerors will be notified via e-mail, or in writing, whether as a result of their white paper submission review, they are either encouraged or not encouraged to submit full proposals. Phase 2 will consist of the solicitation, receipt, and evaluation of full proposals by those offerors of the white paper submissions who were encouraged to submit full proposals. Offerors who did not participate in Phase 1 will not be permitted to participate in Phase 2 and submit a Full proposal. The full proposals are limited to 20 pages, excluding the Formal Transmittal Letter, Cover Page, Summary of Costs and Related Information, Table of Contents and resumes/biographical information for proposed performers. Once the Full Proposal peer/scientific review process has been completed, offerors will be notified via e-mail, or in writing, that their proposal has been selected, selected but not funded, or not selected for award.