Don Brutzman is a computer scientist and associate professor working in the Modeling Virtual Environments & Simulation (MOVES) Institute at the Naval Postgraduate School in Monterey California. Currently he cochairs the Extensible 3D (X3D), X3D CAD and X3D Earth Working Groups for the Web3D Consortium. Together with Len Daly he is coauthor of the book X3D Graphics for Web Authors, published April 2007 by Morgan Kaufmann. He is principal investigator for the Massive Multiplayer Online Wargame Leveraging the Internet (MMOWGLI) sponsored by the Office of Naval Research (ONR). He is a retired naval submarine officer. His research interests include underwater robotics, real-time 3D computer graphics, artificial intelligence, and high-performance networking.