Colonel Moore talking about "layers of discipline" and the need to think, to face the truth of the situation you are in, to be utterly remorseless in dominating the storm of emotion with the thinking part of yourself, is the only way, in my experience, that you have even a ghost of a chance of surviving. Never been to anything like LZ X-ray, never been under that intense a pressure, but nonetheless, I know that I am speaking the truth.
I reserve that feeling for clinton, Carter was an incompetent President and Johnson was so hard trying to turn us into a Socialist Country he didin't have time for a war that distracted him form his Domestic agenda. IMHO clinton was the vile creature.