BBC News
By Holly Honderich
The jolt came when Janette Aguero was in her pyjamas.
It was about 1.20am in Surfside Florida, where she, her husband Albert and their two children were midway through a family holiday, staying at her in-laws' flat on the 11th floor of the Champlain Towers South.
She and Albert woke up to quaking walls, the chandelier dancing violently from the ceiling, and what sounded like a freight train flying by their room.
"I hear my son screaming in the living room 'what the hell is going on'," she said.
Other residents in the small seaside town, a stone's throw from Miami, would later say they heard a boom. Some assumed the noise was thunder, a sign of summer in southern Florida. It was a hot and humid night, the dark sky smudged with passing clouds.