I have been working with a couple of guys in different capacities for close to forty years. The last twenty years or so, I have used them as consultants for difficult machine vision work. I never would have imagined when I first met them that we would still be working together so many years later. They are both exceptionally talented machine vision algorithm developers. When I talk about Frank I say that he is pretty much the Mozart in our field, and he is. In addition to machine vision and among other things, Frank is a truffle hunter. He and a friend wrote a book titled “Field Guide to North American Truffles.” Mark, in a very different way, is just as talented. He got his Ph.D. in Physics from a co-author of Albert Einstein, has an Erdos number of 3, and is indispensable when it comes to the math of image processing. The synergy created when they work together is with par in the little technical world in which we live. I am amazed they still love to do this at 75 plus years of age and even more amazed that I get to do it with them. They are part of the reason I am loathe to retire anytime soon. Even more importantly, I am glad to call him my friend.