I remember a few years back a missile was fired supposedly from an unknown sub from the California coast heading westward out to sea. At the time it was downplayed and multiple reasons were given for the huge contrail, but the message was clear, that missile could have been fired east from a sub off the California coast into various spots in the U.S. just as easily as aimed harmlessly west into the ocean. I am glad patrols are being done in hopes of deterring that eventuality, as Lard a$$ Kim Jong Un, or Crisco Kim, is unstable enough to try something like that.
A few years after that incident, the US military decided that announcing their sub launched ballistic missile tests off the west coast was the best play. Heck, feel like an idiot now after fighting the contrail bs story. No wonder the other side put up a good fight. But you cannot deny physics baby.