1. NASA Ames Research Center, Moffett Field, CA 94035
2. NASA Langley Research Center, Hampton, VA 23665
3. Jet Propulsion Laboratory, Pasadena, CA 91109
4. Goddard Space Flight Center, Greenbelt, MD 20771
5. SRI International, Menlo Park, CA 94025
6. Smithsonian Astrophysical Observatory, Cambridge, MA 02138
7. Sterling Software Inc., Palo Alto, CA 94303