If fully successful, the WG will provide the ISIF community with standardized methods, metrics, tools, and supporting data for evaluation of uncertainty representation in HLIF systems. Even if the WG doesn’t achieve a complete consensus on the evaluation framework, the techniques discussed and lessons learned in the process would be important for the researchers in the ISIF community. In both cases, the bigger impact would be for the customers of information fusion systems to determine how measure, evaluate, and approve systems that assess the situation beyond Level 1 fusion. The customers of information fusion products would have guidelines to draft requirements documentation, the gain of fusion systems over current techniques, as well as issues that are important in information fusion systems design.