This is a Broad Agency Announcement (BAA) from the Joint Program Executive Office for Chemical, Biological, Radiological and Nuclear Defense seeking unsolicited proposals for research and development in medical countermeasures and enabling technologies. Proposals can be submitted at any time while the announcement is active. The work supports the mission areas of the office's five Joint Project Management Offices, with specific technical points of contact listed in the announcement. No specific budget or location for performance is detailed in this general description. All technical and administrative questions should be sent to a specified government email address.