I/ITSEC 2023 Fellow: With nearly four decades of indelible contributions to Modeling and Simulation (M&S), Dr. James A. (Jim) Wall is a technical leader, M&S textbook co-author, and iconic visionary whose work has fundamentally shaped simulation capabilities being delivered and used today. Dr. Wall’s work has enabled the transformation of operations, training, and testing across multiple communities that safeguard our national and personal security. Prior to retirement, Dr. Jim Wall served as the Executive Director of the Texas A&M Center for Applied Technology and the inaugural Director of the Innovation Proving Ground, a component of the Bush Combat Development Complex located on the RELLIS Campus of Texas A&M University. Early on, as a researcher in the newly formed Uniformed Army Scientist Program at the Army Research Laboratory, Dr. Wall led development of the Virtual Sand Table which was the first 3D tabletop environment used to virtually represent military systems being driven by constructive simulations. Later, at Texas A&M he and his team developed the Emergency Management Exercise System that has been used to train more than 20,000 emergency responders across the nation. Additionally, he was the Co-Principal Investigator for the highly successful Digital Emergency Medical System program that connects an ambulance with the receiving emergency room and transmits real-time video and physiological telemetry while on the move. His team’s bio-surveillance common operational picture developed for the Department of Homeland Security’s National Bio-surveillance Integration Center won the 2010 Department of Homeland Security Science & Technology Impact Award. In 2010, he served as the I/ITSEC Conference Chair, the first from an academic institution to serve in this capacity. He supported a Defense Science Board Task Force on a year-long study related to gaming, exercising, modeling, and simulation (GEMS) in 2021. Dr. Wall was commissioned as an Armor officer in the U.S. Army and retired as an Army Acquisition Corps officer with twenty-two years of service. His last Army assignment was as a Senior Computer Scientist with the Army Research Laboratory at Aberdeen Proving Grounds, Maryland. He has a Ph.D. in Computer Science (2003) from Texas A&M University and an M.S. in Systems Technology (Command, Control, and Communications, 1986) from the Naval Postgraduate School in Monterey, CA. In 2009, Dr. Wall was designated as a Regents Fellow by The Texas A&M University System Board of Regents. He was inducted into the National Center for Simulation Modeling and Simulation Hall of Fame in October of 2022.