Dr. Douglass E. Post was the Chief Scientist of the DoD High Performance Computing Modernization Program from 2005 to 2014 and was a Principal Researcher at the Carnegie Mellon University Software Engineering Institute from 2016 to 2020. His major professional interest for almost 50 years has been the development and application of physics-based software to solve physics and engineering design and analysis problems. In 2005, he established and led the DoD Computational Research and Engineering Acquisition Tools and Environments (CREATE) program, a multiyear DoD program to develop and deploy physics-based computational engineering software for the design of ships, air vehicles, ground vehicles, and RF antennas. He is the Associate Editor-in-Chief of the AIP/IEEE publication Computing in Science and Engineering. Doug received a Ph.D. in physics from Stanford University in 1975. He led the tokamak modeling group at Princeton Plasma Physics Laboratory (19751993), the International Thermonuclear Experimental Reactor (ITER) Physics Project Unit (19881990), and the ITER Joint Central Team In-vessel Physics Group (19931998). More recently, he led the Lawrence Livermore National Laboratory A&X Division (19982000) and Los Alamos National Laboratory (20012003) Programs to develop physics-based computer simulations for the design of nuclear weapons. He is the author of nearly 250 scientific and engineering publications and a Fellow of the APS, ANS, and IEEE; an AIAA Associate Fellow; and the recipient of ASNE 2011 Gold Medal.