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    Noor Salman, widow of Pulse nightclub gunman, found not guilty on all counts

    01:28
  • Pulse gunman intended to attack Disney World, was deterred by police presence

    01:25
  • What you need to know to survive a mass shooting

    02:53
  • Pulse massacre officer creates hope by adopting three foster kids

    01:27
  • Body Cam Video Shows Terrifying Scene of Orlando Nightclub Massacre

    00:59
  • Wife of Pulse nightclub shooter Omar Mateen arrested in connection with attack

    02:26
  • Pulse Shooting Victims' Families Sue Facebook, Twitter, and Google

    01:29
  • Six months later, new Pulse nightclub surveillance video of shooting released

    00:38
  • Pulse night club shooting: Body cam video shows police storming the building

    00:35
  • Audio of Omar Mateen’s 911 calls during Pulse nightclub massacre released

    00:52
  • Pulse Victims To Receive Funds

    01:34
  • Police Release 911 Calls From Orlando Nightclub Massacre

    01:18
  • Orlando Survivor Patience Carter Shares her Road to Recovery

    01:01
  • What Will Become Of Pulse?

    01:33
  • Pulse Bodycams Reveal Dramatic Rescues

    01:35
  • Newly released 911 call logs reveal Orlando nightclub horror

    01:51
  • 911 Call Logs Released in Orlando Massacre

    01:22
  • Families upset over where Orlando shooter was buried

    02:13
  • Orlando shooting: Did the FBI miss crucial warning signs?

    02:40
  • Friend Explains Why He Alerted FBI to Orlando Shooter Before Attack

    02:09

Orlando nightclub shooting: Victims still being identified

04:48

At least 50 people were killed and dozens wounded after 29-year-old Omar Mateen opened fire and took hostages at Orlando’s Pulse nightclub. The massacre now stands as the deadliest mass shooting in U.S. history. Matt Lauer reports from Orlando, with Lester Holt contributing the latest developments.