If we are going to be destroyed by an atomic bomb, let that bomb when it comes find us doing sensible and human things — praying, working, teaching, reading, listening to music, bathing the children, playing tennis, chatting to our friends over a pint and a game of darts — not huddled together like frightened sheep and thinking about bombs. They might break our bodies (a microbe can do that) but they need not dominate our minds.
~C. S. Lewis, On Living in an Atomic Age (1948)
We are hearing a lot about North Korea and possible nuclear strikes. I pray they don't happen. I pray for cooler heads, saner minds, and better people to prevail all around.
But I agree with C.S. Lewis. Let's get on with our lives and not worry. Thankfully, I haven't yet heard of any equivalent to "duck and cover" drills starting up. I expect they'd be pretty useless anyway, I don't live near a targeted area, but I assume nowhere is safe and that, at any rate, a nuclear strike anywhere will have consequences everywhere.
Get outdoors, raise funds for earthquake victims, read the Bible, play a game, help your neighbors, fight forest fires, take a hike, watch a movie, study, work, feed the hungry. Do what you are called to do today. Worrying doesn't change anything anyway. So, go an live.
Blessings on your day!