 A global tech outage grounds flights and affects banks and hospitals. Some systems are coming back online. Earlier, about 100 911 centers in the U.S. were reporting outages. No indication this is any sort of attack, but it appears it's some sort of software update across the globe. Fox's David Spunt, the issue appears to be caused by a software update to CrowdStrike cybersecurity software. America's listening to Fox News.