 Travelers are still dealing with flight cancellations a day after a global IT outage. Over 1,700 U.S. flights have been canceled today. Over 6,000 have been delayed. The FAA says the massive number of cancellations on Friday caused a domino effect going into this weekend. The outage was caused by an error in a Microsoft update issued by cybersecurity firm CrowdStrike. I'm Chris Coraggio, NBC News Radio.