NASA is emphasizing the use of larger, more integrated models in conjunction with systems engineering tools and decision support systems. These tools place a corresponding stress on legacy engineering visualization systems which now are required to handle larger data sets, provide more intuition to the user, integrate well with many other tools, and help the user with his/her ultimate goal: improving the design of complex systems. Phoenix Integration proposes to complete the prototype visualization environment created during Phase I to the point where it is a commercially viable product. New features, refinements, and integration with other tools will be accomplished in Phase II. In particular, the work will involve major improvements to whitespace exploration algorithms, techniques that enable users to unconstrain or modify the underlying engineering model in an effort to obtain results in previously unattainable areas. Work will also include more data mining algorithms (e.g. Principal Component Analysis), new graph types (e.g. spider plots), export formats to 3-D tools (e.g. Tecplot), integration with MBSE/SysML tools, integration with web-based decision support environments, and incorporation of probabilistic analysis. A rich integration with ModelCenter, the company's engineering integration and trade study environment, is planned, although a standalone capability will also be offered. The visualizer's architecture will be based on OpenGL and will use the GPU to parallelize rendering computations. Design will focus on usability and responsiveness, with the goal of providing quick insight into complex data. The tool will be user-tested through early adopters to ensure relevance and to guide development.