The inescapable conclusions from Chapters 2 and 3 are that currently there is a lack of an appropriate model of SA for complex collaborative environments and also that existing SA assessment methods are inadequate when considering the measurement of SA during real world collaborative activities. These findings combined confirm the assumption that our understanding of SA in such environments remains limited and subsequently serve to set the scene for the rest of this book; that is, it is our aim to further investigate the description and measurement of SA in collaborative environments. Our lack of knowledge regarding team SA acquisition and maintenance and the accompanying lack of approaches for measuring team SA is the first issue that should be addressed by this research. The purpose of this chapter is therefore to introduce new approaches to both problems. Firstly, a recently developed model of DSA, which accounts for SA in collaborative environments, is presented. Following this, the propositional networks methodology – a modelling approach that can be used to describe and assess DSA during real world collaborative tasks – is described. A simple command and control paradigm example is then used to demonstrate both approaches.