Adrian V. Gheorghe, PhD, is a Professor of Engineering Management and Systems Engineering and the Batten Endowed Chair of System of Systems Engineering at Old Dominion University, USA. He is also a Senior Scientist with the European Institute for Risk and Communication Management. Polinpapilinho F. Katina, PhD, is an Assistant Professor in the Department of Informatics and Engineering Systems at the University of South Carolina Upstate, USA. His research is focused on complex system governance, critical infrastructure systems, decision making and analysis, emerging technologies, and energy systems.