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    Restaurant owner springs into action after customer is attacked

    01:14
  • Mom and daughter fight off intruder who broke into their business

    00:44
  • Watch: Lightning strikes as massive funnel cloud forms in Florida

    00:48
  • Indiana home explosion kills three, search for survivors underway

    02:05
  • Whale breach of boat draws scrutiny over overcrowded waters

    02:14
  • Bus driver remains calm after deer crashes through windshield

    00:28
  • Caught on camera: Humpback whale lands on boat in MA

    00:19
  • Video captures dramatic moment boat is struck by lightning

    02:49
  • Early season shark sightings put beachgoers on high alert

    02:36
  • Massive fire erupts on Carnival cruise ship in the Caribbean

    00:24
  • Construction barges break free along the Potomac River

    00:24
  • Oklahoma driver swerves, narrowly avoids downed power lines

    01:51
  • Watch: Connecticut man finds black bear locked inside car

    00:28
  • Stephanie Gosk shares bike accident story, highlights helmet safety

    04:45
  • Gunfire sends little leaguers and parents scrambling for cover

    02:06
  • Mike Tyson caught on camera punching airplane passenger

    00:29
  • Watch: Teacher saves student from choking on bottle cap

    01:34
  • Dolphin attacks trainer during Miami Seaquarium performance

    00:27
  • Los Angeles hotel fire stuns traffic along 101 freeway

    00:22
  • Trooper who saved runners from drunk driver speaks out: It was instinct

    02:29

Florida woman arrested after live-streaming herself driving drunk

03:01

A young woman who used the Periscope app to post her own drunk driving online was caught by police. This is just one example of how authorities are increasingly turning to social media to help them solve cases. NBC’s Kerry Sanders reports.