The Maritime Safety & Security Information System (MSSIS) is a freely-shared, unclassified, near real-time data collection and distribution network. Its member countries share data from Automatic Identification System (AIS), coastal radar, and other maritime-related systems. MSSIS combines the data from participating nations into a single data stream through secure Internet-based servers. Through MSSIS, participating governments can view real-time AIS data from around the world in a wide range of geographic display options, including text, photo overlays, electronic charts, and Google Earth. Displays can also integrate additional features such as user-provided radar overlays.