The document outlines a Request for Proposal (RFP) issued by the Biomedical Advanced Research and Development Authority (BARDA) within the U.S. Department of Health and Human Services (HHS). It focuses on developing standardized radiation dosimetry guidelines for nonclinical models used in research institutions across BARDA's radiation research portfolio. The objective is to harmonize dosimetry methods to ensure consistent and accurate data for medical countermeasure development against chemical, biological, and radiological threats, as well as emerging diseases. The solicitation details the contract structure, including a cost-plus-fixed-fee model for the initial two-year base period, with options extending up to five years. It emphasizes the importance of establishing a centralized dosimetry harmonization program, including protocol developments, phantom fabrications, and irradiator assessments to maintain data integrity. Furthermore, it outlines deliverables such as progress reports, inventory of irradiators, and standard operating procedures. The document also specifies terms regarding inspection, acceptance, project management, and reporting requirements. It highlights the contractual obligations to provide comprehensive deliverables that align with federal acquisition regulations, ensuring both accountability and compliance throughout the contract's duration. Overall, this RFP is a strategic government initiative to enhance public health preparedness through rigorous research standardization and methodology development.