Historically, in a tactical C4ISR environment, information fusion processing and plan understanding and execution monitoring have been performed without regard to one another. In particular, plan execution monitoring assumes that an accurate "world state" is available, while information fusion processing assumes that "operational context" is available. Because operational context allows information fusion to develop an accurate representation of world state, and world state is the basis from which plan execution monitoring assesses the status of plans, a loose coupling between information fusion and plan understanding and execution monitoring results in less-than-optimal situational awareness for a commander. Leveraging plan under standing and levels 1-4 information fusion techniques, Lockheed Martin Advanced Technology Laboratories (LM ATL) has developed a concept design and prototype, plan-driven fusion, which enables iterative, closed-loop cooperation between planning and fusion components within a C4ISR environment

We demonstrate a software system that runs on smartphones and allows two or more geographically dispersed participants to collaborate on the solution of mathematical problems. We show how participants can create and join a collaborative session, how they can use a virtual whiteboard for the exchange of geometrical drawings and of mathematical formulas, and how they can communicate using text messages. We demonstrate the turn-management mechanism provided by our system, and we show how the system facilitates cross-referencing within the session.