 Rare to see such a global outage like this persisting for several hours. We have calls to the FBI to see what's being done here. But as we can tell, this is strictly software-related, and it appears things are improving at some airports. Fox's David Spunt. There have been more than 1,000 flights either canceled or delayed in the U.S. Americans lifted a ground stop. Frontier lifted a similar one earlier. The outage has also affected 911 centers in the U.S. and banks overseas. America's listening to Fox News.