The study of terrorism strives to identify logic and patterns in a phenomenon that is in constant flux. Weapons, tactics, recruitment, financing, and other elements are fluid as they evolve and adapt to current conditions and the environment. Successful policy requires remaining abreast of the ever-evolving threat and responding accordingly. As such, U.S. policymakers need to understand the current dynamics and trends in order to mitigate and combat the threats to our nation. The purpose of this paper was to compile as much factual data as possible on U.S. citizens and individuals domiciled in the United States who have been reported in the news and have been suspected to have ties to Islamic extremist activity from approximately January 2009 to April 2011. The aim of the project was to explore any perpetrator patterns that presented themselves in the hopes that the revelations could help equip decision-makers with insight to the threat and assist the creation of proactive policies in the fight against terrorism derived from Islamic extremism.