In response to the cancellation announcement, Congress asked the Government Accountability Office (GAO) to conduct a review of the program and the proposed system enhancements that would have been incorporated in BioWatch Gen-3. However, Mike Walter, BioWatch Program manager, Office of Health Affairs, DHS, said that DHS did not agree with all of GAO's characterizations of the BioWatch program efforts described in this review. In response to this, DHS requested that the National Academies of Sciences, Engineering, and Medicine conduct a workshop to further explore the findings of the 2015 GAO report and discuss the impact these findings may have with regard to the future development of the technical capabilities of the BioWatch program. Workshop participants also discussed existing and possible collaborations between BioWatch, public health laboratories, and other stakeholders that could contribute to the enhancement of biosurveillance capabilities at the federal, state, and local levels. This publication summarizes the presentations and discussions from the workshop.