I retired from Rockwell-Collins in 1984 after 32 years of research in switched communication systems, networks and became an independent consultant and part-time teacher at various local universities. I have also been working on a highly interactive/iterative network design tool called EcoNets. Presently, I am very much interested in algorithms for network topology optimization and graph theory (especially find all routes in a connected graph). I am an author/coauthor of three books on network topology optimization and network design.