Since September 11, 2001, so-called "homegrown terrorists," working alone or with others, have planned and in some cases implemented terrorist activities, contributed financial or other material support to others' terrorist activities, or become radicalized in the United States and then traveled to other countries to conduct terrorist activities directed against those countries or against the United States. This paper examines the cases of homegrown terrorism from 9/11 through 2010, highlights lessons learned from those cases that suggest actions for the future, and includes a chronology of numbers and case descriptions of terrorist events in the United States during that period. -- from the publisher.

Al Qaeda's emphasis on do-it-yourself terrorism -- The terrorists -- U. S. [i.e., United States] terrorists abroad -- Radicalization and recruitment to terrorism -- Assessing the threat -- Chronology of the cases.