In 2007, DOJ and its federal partners developed the Nationwide Suspicious Activity Reporting Initiative to establish a capability to gather and share terrorism-related suspicious activity reports. GAO was asked to examine the initiative's progress and performance. This report addresses the extent to which (1) federal agencies have made progress in implementing the initiative, and what challenges, if any, remain; (2) the technical means used to collect and share reports overlap or duplicate each other; (3) training has met objectives and been completed; and (4) federal agencies are assessing the initiative's performance and results. GAO analyzed relevant documents and interviewed federal officials responsible for implementing the initiative and stakeholders from seven states (chosen based on their geographic location and other factors). The interviews are not generalizable but provided insight on progress and challenges. GAO recommends that DOJ implement formalized mechanisms to provide stakeholders feedback on the suspicious activity reports they submit, mitigate risks from supporting two systems to collect and share reports that may result in the FBI not receiving needed information, more fully assess if training for line officers meets their needs, and establish plans and time frames for implementing measures that assess the homeland security results the initiative has achieved. DOJ agreed with these recommendations and identified actions taken or planned to implement them.