Walter Arthur Petersen, NASA Marshall Space Flight Center, Science Research and Projects Division, ST-10, Huntsville, AL, United States, Patrick N Gatlin, NASA MSFC, Huntsville, AL, United States, Todd Berendes, University of Alabama in Huntsville, Huntsville, AL, United States, David A Marks, Science Systems and Applications, Inc., Lanham, MD, United States, Jason L Pippitt, Science Systems and Applications, Inc., Code 612, Lanham, MD, United States and David B Wolff, NASA Goddard Space Flight Center, Greenbelt, MD, United States