Today was marred by violence this morning as a man wielding a knife invaded Rockefeller Plaza!
Ch-ch-check out the video (above) to see footage of NBC's crack security team shutting down the man's apparently self-harming intentions!
Host Matt Lauer was on the scene and tweeted just moments later:
All secure on the plaza after a scary incident. Thanks to our security team and the NYPD.
— Matt Lauer (@MLauer) June 6, 2013