Daniel Hettema is the Director of Digital Engineering, Modeling and Simulation (DEM&S) within the Office of the Under Secretary of Defense for Research and Engineering. He oversees DoD-wide strategy, policy, and coordination in DEM&S and promotes the advancement of digital practices in defense acquisition. Mr. Hettema brings experience in model-based systems engineering and digital engineering in both government and industry supporting the Joint Staff, National Nuclear Security Agency, and the Intelligence Community. He has held leadership roles in the International Council on Systems Engineering, at the local Washington, D.C., level and as a Corporate Advisory Board representative. He has presented numerous topics on systems engineering and digital engineering.