The Intelligence and National Security Alliance’s Homeland Security Intelligence Council (HSIC) conducted a tabletop exercise at the Center for Strategic and International Studies in Washington, D.C., on April 10, 2014. Played out in a roundtable environment and using a fictional scenario, the exercise was designed to examine existing information sharing policies and procedures among a wide variety of stakeholders in the context of a homegrown violent extremist (HVE) threat. It was the intent of the exercise to identify processes and systems that work well, others that may require clarification, and any that require further study and dialogue. Scenario participants included representatives from the federal government, state government, Information Sharing and Analysis Centers (ISACs), and the Royal Canadian Mounted Police.