 The world is facing a heightened threat from terrorism and Australia is not immune. The Australian government takes this threat very seriously. Security and law enforcement agencies across the country are working together to keep us safe. A continuous assessment is made of the level of the terrorist threat being faced by Australia. The National Terrorism Threat Advisory System is a new way of defining and communicating the threat of a terrorist attack in Australia using five levels. The lowest category of threat, green, means that a terrorist action is not expected. The next, blue, estimates an action as being possible. The third level, yellow, elevates the risk to probable. The fourth level, orange, means that a terrorist action is expected. The highest level, red, means that a terrorist action is certain. The new system has been designed to provide as much information as possible to ensure that the community is informed about the level of the threat it faces. If the threat level changes, you will be provided with details of what the new level, whether raised or lowered, means for you, for the community, for business, for industry and for Australia. The National Terrorism Threat Advisory System is part of the commitment being made by governments, security and law enforcement agencies to protect Australia from terrorism. Countering terrorism is a shared responsibility between all Australian governments, the private sector and the community. There is more information on the National Terrorism Threat Advisory System including details about the current terrorism threat level at www.nationalsecurity.gov.au