Situation awareness is a key construct in human factors and arises from a process of situation assessment (SA). SA comprises the perception of information, its integration with existing knowledge, the search for new information, and the prediction of the future state of the world, including the consequences of planned actions. Causal models…

We summarize current data and understanding about the prevalence of gun violence at schools and risk of rampage school shootings. Following that comes a discussion of gun availability among youth and strategies and practices in the United States and abroad that have been implemented to limit access to firearms for minors. Next, we review the…