Situation awareness, or SA, is the perception of environmental elements within a volume of time and space, the understanding of their meaning, and the projection of their status in the near future. It is also a field of study concerned with perception of the environment critical to decision-makers in complex, dynamic areas from aviation , air traffic control, power plant operations, military command and control — to more ordinary but nevertheless complex tasks such as driving an automobile or motorcycle. Situation awareness (SA) involves being aware of what is happening around you to understand how information, events, and your own actions will impact your goals and objectives, both now and in the near future. Lacking SA or having inadequate SA has been identified as one of the primary factors in accidents attributed to human error. Thus, SA is especially important in work domains where the information flow can be quite high and poor decisions may lead to serious consequences, such as piloting an airplane, functioning as a soldier, or treating critically ill or injured patients. Having complete, accurate and up-to-the-minute SA is essential where technological and situational complexity on the human decision-maker are a concern. SA has been recognized as a critical, yet often elusive foundation for successful decision-making across a broad range of complex and dynamic systems, including aviation and air traffic control, emergency response and military command and control operations, and offshore oil and nuclear power plant management.