We gratefully acknowledge the assistance of S. Bailin, R. Dutilly, J. M. Moore, and W. Truszkowski in providing us with information on the POCC. We gratefully acknowledge the major contributions of Liz O'Hara-Schettino in developing the domain model of the POCC. This work was sponsored primarily by NASA Goddard Space Flight Center, with support from the Virginia Center of Innovative Technology. The Software Through Pictures CASE tool was donated to GMU by Interactive Development Environments (IDE).