Preventing terrorism is a responsibility of every American, and requires an alert and informed citizenry that is ready to report suspicious activity that may be indicative of a terrorist act or terrorism planning. With this core understanding, IACP began reviewing contemporary and historical research, literature, trends, and practices related to community-based terrorism prevention efforts in the spring of 2010. The goal of this effort was to identify successful strategies for implementing and maintaining state, territorial, tribal, and local initiatives that improve the public’s awareness and reporting of suspicious activity related to terrorism. Initial findings suggested that more information was needed to understand the psychological and social inhibitors and motivators of the public’s awareness of and willingness to report suspicious activity. To narrow this gap in data, the project team conducted and analyzed research in the summer of 2010.