Reuters
Emergency services set up a makeshift medical centre in the middle of the Las Vegas Strip.
The deadliest shooting in recent US history unfolded - as most do - in a storm of chaos and confusion.
58 people were killed and more than 850 injured when a gunman opened fire at a country music festival on the Las Vegas Strip on October 1.
By the time the general public knew a shooting was underway, the gunman, 64-year-old Stephen Paddock, was already dead.
Despite an extensive investigation lasting the best part of a year, authorities ended their efforts without being able to determine Paddock's motivation.
Here, moment by moment, is how the attack unfolded: