he has been given updates options. the death toll, it war breaks out, could be horrific. >> there is acontingency. >> if kim jong-un moves first, a decision to shoot the missiles down will have to be made so fast it could come without president trump being consulted several u.s. officials tell cnn. once they fire, a shoot down decision must be made within minutes opinion for guam, the t.h.a.d. missile season will be the final layer of defense.