The Pentagon has temporarily grounded all Apache helicopters after the crash that killed two service members near Fort Hood, Texas. NBC News’ Gordon Lubold explains the decision.  For more context and news coverage of the most important stories of our day, click here: nbcnews.com » Subscribe to NBC News: nbcnews.to/SubscribeToNBC » Subscribe to Here's the Scoop podcast: nbcnews.com/heres-the-scoop-daily-podcast » NBC News App: apps.nbcnews.com/mobile » Breaking News Alerts: link.nbcnews.com/join/5cj/breaking-news-signup?cid=sm_npd_nn_yt_bn-clip_190621 » Visit NBCNews.Com: nbcnews.to/ReadNBC » Find NBC News on Facebook: nbcnews.to/LikeNBC » Follow NBC News on Twitter: nbcnews.to/FollowNBC » Follow NBC News on Instagram: nbcnews.to/InstaNBC #news #military #helicopter