RODNEY D. STEWART is President of Mobile Data Services, and senior staff consultant for Science Applications International Corporation (SAIC) and Computer Systems Technology. He has served as project engineer and project manager with the National Aeronautics and Space Administration, and as manager of the cost analysis office in the Systems Analysis and Integration Laboratory of NASA's George C. Marshall Space Flight Center in Huntsville, Alabama. He is a past national president and past national policy director of the National Estimating Society, and a certified cost estimator/analyst (CCE/A).

RICHARD M. WYSKIDA, PhD, is Professor of Industrial and Systems Engineering at the University of Alabama in Huntsville. His research has involved the minimization of system cost via the optimization techniques of operations research. He is a senior member of the Institute of Industrial Engineers, a member of INFORMS, a member of the American Society for Engineering Education, and a registered professional engineer in the state of Alabama.

JAMES D. JOHANNES, PhD, is Dean of the School of Graduate Studies and Professor of Computer Science at the University of Alabama in Huntsville. He has served as principal investigator on numerous computer software projects during the past twenty years at the University. His professional affiliations include the American Association for Artificial Intelligence, the Association for Computer Machinery, and the IEEE Computer Society.