Edwin Z. (Zack) Crues received B.S., M.S., and Ph.D. degrees in Aerospace Engineering from the University of Texas, Austin in 1983, 1985, and 1989 respectively. Zack has over 30 years of professional experience in developing spacecraft simulation and simulation technologies. Zack is currently a member of the Simulation and Graphics branch at NASA’s Johnson Space Center in Houston, Texas where he leads the development of simulation technologies and the application of those technologies in the simulation of NASAs current and proposed crewed spacecraft. He has developed hundreds of models and simulations for NASA spacecraft, European Space Agency launch systems, and Japanese Aerospace Exploration Agency spacecraft. Zack’s recent research focus has been developing and applying distributed computation and distributed simulation technologies. This includes a large-scale distributed simulation of NASAs proposed human space exploration missions. Zack has received numerous awards from the Simulation Interoperability Standards Organization (SISO) including the SISO Technical Merit Award and from NASA including JSC Director’s Commendation Awards and the NASA Exceptional Engineering Achievement Medal.