Jon Lee, G. Lawton and Louise G. Johnson Professor of Engineering in Industrial & Operations Engineering, has been appointed as Co-Editor of the journal Mathematical Programming, Series A (MPA). Published by Springer, MPA is the flagship journal of the Mathematical Optimization Society. MPA publishes original articles dealing with all aspects of mathematical optimization; that is, everything of direct or indirect use concerning the problem of optimizing a function of many variables, often subject to a set of constraints. This involves theoretical and computational issues as well as application studies. Previously, Jon was Associate Editor of MPA and its sister journal MPB.