1. Director, for Tracking and Data Acquisition Planning, Jet Propulsion Laboratory, California Institute of Technology, Pasadena 91103
2. Senior scientist, for Tracking and Data Acquisition Planning, Jet Propulsion Laboratory, California Institute of Technology, Pasadena 91103
3. SETI project manager and manager of Advanced Projects for Tracking and Data Acquisition Planning, Jet Propulsion Laboratory, California Institute of Technology, Pasadena 91103