Professor of Operations Management at the Graduate School of Business and Public Policy, Naval Postgraduate School.
Associate Professor at the Faculty of Economics of USI.
Associate Professor of management at Montana State University's College of Business and a principal of Greer Black Company.
Co-founder & co-director of the Health and Humanitarian Logistics Research Center at the Supply Chain and Logistics Institute, Georgia Tech.
Founder and director of the MIT Humanitarian Response La. director MIT Renewable Energy Delivery project.
Academic Director of the Advanced Master in Humanitarian Logistics and Management and Associate Professor of Management at USI.
President, Greer Black Company.
Consultant, Astute System Dynamics LLC.
Inaugural Judith Neilson Chair of Architecture and Design at UNSW Australia
Professor at MIT-Zaragoza International Logistics Program
Research Scientist in the Engineering Systems Division of MIT.