Donald J. Sheehan retired after 40 years at Grumman Aerospace with management positions in flight test engineering, advanced development, international business development, program management, production management, new business development, strategic planning and logistics support. I was a Captain in the United States Marine Corps, and I have B.S. from SUNY, and a Masters Degree from Stony Brook University.  I also attended the Harvard Graduate School of Business Administration's P.M.D. program.  I have been teaching Business Strategy at Stony Brook for twelve years.