Still trying to figure out how to get links from Coast browser. Here you go: http://www.politico.com/magazine/story/2016/06/wall-street-2016-donald-trump-hillary-clinton-213931
National Command Authority (NCA) is a term used by the Department of Defense of the United States of America to refer to the ultimate lawful source of military orders. The NCA comprises the President of the United States (as commander-in-chief) and the Secretary of Defense jointly, or their duly deputized successors. Only the President can direct the use of nuclear weapons. LINK: https://en.wikipedia.org/wiki/National_Command_Authority