High Quality Content by WIKIPEDIA articles! Purdue University`s Synthetic Environment for Analysis and Simulations, or SEAS, is currently being used by Homeland Security and the US Defense Department to simulate crises on the US mainland. SEAS "enables researchers and organizations to try out their models or techniques in a publicly known, realistically detailed environment." It "is now capable of running real-time simulations for up to 62 nations, including Iraq, Afghanistan, and China. The simulations gobble up breaking news, census data, economic indicators, and climactic events in the real world, along with proprietary information such as military intelligence. The Iraq and Afghanistan computer models are the most highly developed and complex of the 62 available to JFCOM-J9. Each has about five million individual nodes representing things such as hospitals, mosques, pipelines, and people."