Thomas Grubb, NASA, United States; Kaur Kullman, UMBC, United States; Thomas Clune, NASA, United States; Leslie Lait, SSAI/GSFC, United States; Matthias Zwicker, UMD College Park, United States; Steve Guimond, UMBC and NASA, United States; Ruth West, University of North Texas, United States; Roger Eastman, UMD College Park, United States; Ian Afflerbach, University of North Texas, United States; Don Engel, UMBC, United States