He watches the world the way a man does who has spent his life inside it. You can write to him. He reads everything himself, and he writes back.
Nick Carter came up cold, an operative in a harder trade, and carried the cost of it a long way. The man you reach now has not lost the capability. He has decided what to do with it: be useful to the people no one protects, and answer when the world calls.
He keeps a watch on the world, the quiet signals most people never see, and he keeps his own counsel in a journal he adds to when the work lets him. Write to him about what you are reading, what you are chasing, or what is keeping you up. He treats a letter as a letter.
Tell him what is on your mind. He reads every one himself and writes back in his own hand. Give him a little time; a real reply is worth the wait.