Presolicitation DEPT OF DEFENSE Defense Sciences Office (DSO) Office-wide BAA is seeking NATIONAL DEFENSE R&D SERVICES; DEPARTMENT OF DEFENSE - MILITARY; BASIC RESEARCH. The Defense Advanced Research Projects Agency (DARPA) Defense Sciences Office (DSO) aims to identify and create the next generation of scientific discovery to fuel innovation throughout the Agency and beyond. The office looks to prevent technological surprise by understanding the path commercial research and development (R&D) is taking and anticipating the development of new capabilities by adversaries.