The Defense Advanced Research Projects Agency (DARPA) Defense Sciences Office (DSO) announces the opportunity for potential performers to meet with a DSO program manager (PM) to discuss mutual research interests. All meetings with DSO PMs will be held in person and only a limited number of meeting times are available. To take advantage of this opportunity, interested parties must submit an executive summary (white paper). These meetings will be held in conjunction with the Discover DSO Day event scheduled for June 18-19, 2019 in Arlington, Virginia. Nearer the event, DARPA will publish a separate announcement on www.fbo.gov to announce registration and provide additional details for this event.