Walter M. Wonham received the B. Eng. degree in engineering physics from McGill University in 1956, and the Ph.D. in control engineering from the University of Cambridge (U.K.) in 1961. From 1961 to 1969 he was associated with several U.S. research groups in control. Since 1970 he has been a faculty member in Systems Control, with the Department of Electrical and Computer Engineering of the University of Toronto. Wonham is the author of "Linear Multivariable Control: A Geometric Approach" (Springer-Verlag: 3rd ed. 1985), co-author (with C. Ma) of "Nonblocking Supervisory Control of State Tree Structures" (Springer-Verlag: 2005), and co-author (with K. Cai) of "Supervisor Localization" (Springer-Verlag: 2016). He is a Fellow of the Royal Society of Canada, a Life Fellow of the IEEE, and a Foreign Member of the (U.S.) National Academy of Engineering. In 1987 he received the IEEE Control Systems Science and Engineering Award and in 1990 was Brouwer Medallist of the NetherlandsMathematical Society. In 1996 he was appointed University Professor in the University of Toronto, and in 2000 University Professor Emeritus. Kai Cai received the B. Eng. degree in Electrical Engineering from Zhejiang University in 2006, the M.A.Sc. degree in Electrical and Computer Engineering from the University of Toronto in 2008, and the Ph.D. degree in Systems Science from Tokyo Institute of Technology in 2011. He is an Associate Professor in the Department of Electrical and Information Engineering of Osaka City University; preceding this position he was an Assistant Professor in the University of Tokyo 2013-2014, and a Postdoctoral Fellow in the University of Toronto 2011-2013. Cai is a co-author (with W.M. Wonham) of "Supervisor Localization" (Springer-Verlag: 2016). In 2013 he received the Best Paper Award of SICE; in 2010 the Best Student Paper Award of IEEE Multi-Conference on Systems and Control, and Young Author’s Award of SICE.