Susan Weiss, Director of the Division of Extramural Research at the National Institute on Drug Abuse (NIDA), provided a fantastic opening plenary entitled, "How Cannabis Research and Cannabis Policy Can Inform Each Other". Marcel Bonn-Miller, Adjunct Assistant Professor of Psychology in the Department of Psychiatry at the University of Pennsylvania Perelman School of Medicine, provided an excellent closing plenary, "The Complex, Bi-Directional, and Nuanced Associations between Cannabis and Posttraumatic Stress Disorder." During the meeting, we had excellent discussions during the symposia, panel discussions, poster presentations, and social events. We thank each and all attendees for coming to the meeting and contributing to the meeting's success, and we hope to see you (and all of your colleagues) next year!