Early on Saturday morning, everyone in the state of Hawaii received a mobile alert announcing — in all caps — that a ballistic missile was headed toward Hawaii.
It took 38 minutes before a second alert was sent to people's phones, declaring it a false alarm.
On Sunday, BuzzFeed News asked people in Honolulu's iconic shoreline neighborhood Waikiki what it was like to believe — for 38 minutes — that a nuclear attack was imminent.
Here is what they said, lightly edited for clarity.