At a recent conference at the U.S. Army War College in Carlisle, PA, I had the chance to sit down with one of the most influential military voices on environmental security debates, Dr. Kent Hughes Butts. As both a professor of geography and a retired colonel in the U.S. Army, Dr. Butts has been at the center of the U.S. military’s efforts to grapple with the implications of environmental change. I asked Dr. Butts how he saw the field of environmental security (if we can call it a field) evolving over the last two decades.