The NCA Vulnerability Assessment Workshop, co-sponsored by the U.S. Department of Agriculture Forest Service and the Centers for Disease Control and Prevention, was held on January 19-20, 2011 at the Embassy Suites Atlanta-Buckhead Hotel in Atlanta, Georgia. A group of experts convened to share their experiences. Participants brought a wide range of disciplinary expertise in the natural and social sciences, sector expertise, and experience with the concepts of vulnerability and conducting vulnerability assessments (VAs). Participants included representatives from federal and state government, non-governmental organizations, tribes, universities, and communities. This workshop was the first engagement with the NCA for many participants, allowing for productive dialogues on connecting to new networks and knowledge-sharing.