1. Worst mass shooting in modern U.S. history
America woke to the worst mass shooting in the country's modern history, which unfolded last night in a vulnerable, rowdy place: an open-air country music concert targeted from a towering hotel across the Las Vegas Strip:
- "Country music star Jason Aldean was performing at the Route 91 Harvest Festival when the gunman apparently used a hammer-like device to smash out windows in his room and opened fire, the muzzle flashes visible in the dark," AP reports.
- "The crowd, funneled tightly into a wide-open space, had little cover and no easy way to escape. Some victims fell to the ground, while others fled in panic. Some hid behind concession stands. Others crawled under parked cars."
What we know:
- At least 58 people are dead, and 515 were taken to the hospital.
- Suspect Stephen Paddock, who police say was a lone wolf, was a local resident.
- He had no apparent ties to international terrorist organizations, per the FBI.
- Paddock was dead when police entered his 32nd floor hotel room at the Mandalay Bay, more than an hour after he started shooting.
- Police recovered 18-20 firearms, some fully automatic, from his hotel room, per the Wall Street Journal.
What we don't know:
- His motives.
- How Paddock managed to maintain fire for so long on the crowd.
- How he obtained such weaponry.
- Vegas authorities are asking people to keep donating blood.
- The Mandalay Bay is asking for grief counselors to help.
- President Trump will visit Las Vegas on Wednesday.
Go deeper: Timeline of how the shooting unfolded.