"Dear Friends and Colleagues, It's been an incredible honor to work with and for you over the past 28 years on space station utilization planning, engineering development and operations. Despite what some thought to be insurmountable obstacles, the global team prevailed to deliver one of the greatest engineering achievements and most capable laboratory complexes in history. It's an icon for the power of relentless pursuit and exemplary of what great nations can do through peaceful cooperation."
Keith's note: I have known Mark for more than 20 years. Indeed, I used to work for him. While I have been critical of Mark and various aspects of space station utilization recently (because I think NASA can and should do better), I have to say that there were dark times when most of NASA really did not care if the space station was ever used - or was useful. During those long periods when budgets, assembly, and ops drove everything, Mark was one of the few who managed to keep the utilization spark alive within NASA. It will be interesting to see what he does with a fusion reactor at his disposal in his new position. Mark attached an interesting paper on space research-related patents with this departure message. I'm certain that it would not occur to CASIS that it would be useful to post it on their site.