How the Olympics make every microsecond count

A fraction of a second can be the difference between who gets the #gold, silver, or bronze medals at the #WinterOlympics. NBC News' Andrew Greif looks at the #technology — and manpower — used behind the scenes to keep time. For more context and news coverage of the most important stories of our day, click here: https://www.nbcnews.com » Subscribe to NBC News: http://nbcnews.to/SubscribeToNBC » Subscribe to Here's the Scoop podcast: https://www.nbcnews.com/heres-the-scoop-daily-podcast Every day, NBC News he ...