you are going to speak about andy marshall. guest: mr. andy marshall is perhaps not as well-known as luminaries that worked and defense over the last 30 years, but he actually has worked in defense over 50 luminariesyears. over 40 of it in the pentagon. he ran an organization known as the office of net assessment. now, the office of net assessment under mr. marshall's tneure -- tenure became a focal point for people who try to understand what the future threats to the united states would be. he was very prescient in terms of identifying the chinese as a growing threat, militarily but economically as well. and then he worked very hard to get people to innovate and become creative and thinking about strategies. people tend to associate the pentagon with lots of manpower, weapon systems, budgets, programs. people who looked at strategy as a way to solve our security challenges, and they did a very good job at it. host: i'm going to ask a general question of you in terms of leadership, because that's what this list is all about, defining lead