1985–1988, Director of the National Security Agency, Fort Meade, Maryland 1989, Director of national security studies, Hudson Institute, Indianapolis, Indiana 1989, Adjunct professor, political science, Yale University, New Haven, Connecticut.
1985-1988, Direktur Badan Keamanan Nasional, Fort Meade, Maryland 1989, Direktur studi keamanan nasional, Institut Hudson, Indianapolis, Indiana 1989, Profesor tidak tetap, ilmu politik, Universitas Yale, New Haven, Connecticut.