From June 6-16, 2016, a series of investigator meetings and initiation visits took place in preparation for our upcoming study of smoked marijuana for symptoms of PTSD in 76 U.S. veterans. Principal Investigators, study coordinators, and study physicians met in Palo Alto, CA, Baltimore, MD, and Phoenix, AZ, to discuss study procedures, receive training on the electronic platforms to be used in the study, and review protocols for recruitment, enrollment, and study publicity. Discussions at these meetings led to an amendment to the study protocol to clarify several study procedures and adjust study measures. Once the amendment has been approved by the Institutional Review Boards (IRBs) at the Scottsdale Research Institute (Phoenix) and Johns Hopkins University (JHU), we will be able to begin recruiting and enrolling participants. We currently expect that this study will begin in August 2016.