This is a five-year, open-continuous Broad Agency Announcement (BAA) for chemical and biological defense technology projects. The scope is limited to projects within Technology Readiness Levels (TRL) 3-6, with the goal of advancing them to TRL 4-6. The program seeks science and technology projects that can be transitioned to joint acquisition programs. No specific budget, performance location, or non-bid timelines are detailed in this general description.