911 outages impact millions across South Dakota, Nebraska, Nevada and Texas

911 call centers were cut off last night in South Dakota, Nebraska, Nevada and Texas. A telecom company says it happened when a contractor mistakenly cut a fiber line. Experts say it exposes a critical national vulnerability. NBC News' Tom Costello reports.

» Subscribe to NBC News: https://www.youtube.com/user/NBCNews

NBC News Digital is a collection of innovative and powerful news brands that deliver compelling, diverse and engaging news stories. NBC News Digital features NBCNews.com, MSNBC.com, TODAY.com, Nightly News, Meet the Press, Dateline, and the existing apps and digital extensions of these respective properties. We deliver the best in breaking news, live video coverage, original journalism and segments from your favorite NBC News Shows.

Connect with NBC News Online! Breaking News Alerts: https://link.nbcnews.com/join/5cj/breaking-news-signup?cid=sm_npd_nn_yt_bn-clip_190621 Visit NBCNews.Com: https://www.nbcnews.com/ Find NBC News on Facebook: https://www.facebook.com/NBCNews Follow NBC News on Twitter: https://twitter.com/NBCNews Get more of NBC News delivered to your inbox: nbcnews.com/newsletters

#911 #Emergency #NationalSecurity