From NBC News. NASA astronauts Anne McClain and Nichole Ayers arrived to the International Space Station in March. 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 » Watch more NBC video: http://bit.ly/MoreNBCNews NBC News Digital is a collection of innovative and…

From NBC News. NBC News’ Sam Brock talks to Steve Adelman from Event Safety Alliance about the fan who was critically injured in the stands of a Pittsburgh Pirates game and what could have gone wrong.  For more context and news coverage of the most important stories of our day, click here: https://www.nbcnews.com » Subscribe…