The GTD is the largest, most comprehensive open-source database on terrorist events in the world with over 150,000 incidents and over 100 variables recorded between 1970 and 2015. It is widely used throughout federal, state and local agencies to provide an empirical basis for policy and practice, including serving as the basis for the statistical annex for the State Department's annual "Country Reports on Terrorism." 

IN 2016, THE COMPLETE GTD DATA FILES WERE DOWNLOADED MORE THAN 1,050 TIMES per month. frequent users of the GTD include the homeland security enterprise and intelligence community, all branches of the armed forces, the academic community, non-governmental organizations and the media.

The GTD is accessible online and free for government and research purposes; commercial licenses are available. START also provides training on using the GTD to maximize the analysts' ability to identify terrorism trends and evaluate a variety of terrorism risks. The online training can be accessed here.