Well, we (Hawaii) may have to worry about possible nuclear attack, more from China than from North Korea, if the current coordination effort between Mr. Trump and Mr. Xi, (to pressure Kim Jung Un to give up current nuclear program), does not work well, and escalates to war.
According to latest Chinese news report, which is basically the voice of the Chinese government, (via a South Korean news); (among other things),
1. China may want to cut only portions of its supplies to North Korea, (if their current diplomacy does not work), because they worry humanitarian crisis if cut all supplies.
2. China warned US and South Korea to refrain from military action, esp. not to overthrow the North Korean regime.
If China only cuts portions of its supplies, North Korea may still endure the sanction and be able to continue its nuclear program.
Then, we (US) may attack North Korea; and China would be automatically involved in the war, because they don’t want the current North Korean regime to be overthrown.
Well, let us hope that Mr. Xi keep pressuring North Korea, and hope for the best…