1. Embry‐Riddle Aeronautical University Daytona Beach FL USA
2. Naval Research Laboratory Washington DC USA
3. Dartmouth College Hanover NH USA
4. Massachusetts Institute of Technology Boston MA USA
5. Southwest Research Institute San Antonio TX USA
6. University of Alaska Fairbanks Fairbanks AK USA
7. Cornell University Ithaca NY USA
8. Clemson University Clemson SC USA
9. University of New Hampshire Durham NH USA
10. University of Maryland College Park MA USA
11. SRI International Menlo Park CA USA
12. NASA Jet Propulsion Laboratory Pasadena CA USA
13. NASA Goddard Space Flight Center Greenbelt MD USA