When North Korea sent a missile over Japan in October, setting off emergency alerts across cell networks, Megumi Morohoshi made a decision: She was going to buy a bomb shelter.
Morohoshi had been concerned about the ever-present danger from Japan's earthquakes, and she had been wanting to expand the house to accommodate her three young children.
But the invasion of Ukraine followed by a barrage of North Korean missiles convinced her the threat was urgent.
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