Zhonghua Xu, Virginia Polytechnic Institute and State University, Blacksburg, VA, United States, Michael Hartinger, University of Michigan, Ann Arbor, MI, United States, Denny M. Oliveira, NASA Goddard Space Flight Center, Greenbelt, MD, United States, C. Robert Clauer, National Institute of Aerospace, Hampton, VA, United States, Shane Coyle, Virginia Polytechnic Institute and State University, Blacksburg, United States and Daniel R Weimer, Virginia Tech, Blacksburg, VA, United States