He is a practicing arbitrator and mediator. He was Senior Hearing Officer/Senior Counsel with the National Mediation Board (NMB), the statutory-neutral federal agency responsible for facilitating labor relations in the nation’s two primary transportation modes — airlines and railroads. At the NMB, he also served as the Administrator of the Center for Advanced Study of Law and Dispute Resolution Process at George Mason University School of Law, a multi-discipline, academic forum. As Administrator, he was also Professor of Law and Conflict Resolution.