weapons that can threaten his names and tens of thousands of troops in south korea. if there's an alarm, even a false one, trump would have a few minutes to decide whether to launch a bomb or hold back. pete metzger was an advisetory president reagan. >> the result the president would make is so grotesquely horrible, it would change the face of the earth, it would change humanity, it would change man kind. >> if the president decides to use the football and launch a nuclear strike, is there anyone in the chain of command to stop that order? the white house won't comment on that, but pete metzger and others tell us unless there's a full on mutiny, no one can stop that order. brian todd, cnn, washington. well, ahead here, a satellite set to launch soon is expected to revolutionize the way we get our weather forecasts. derek is all in a deather over it. >> and he'll have the story.