 From ABC News, this is a special report. Global IT outage. Outage. I'm Sherry Preston. It was supposed to be a simple Microsoft Windows update, but cybersecurity firm CrowdStrike says it was faulty. And for hours now, airline flights have been grounded, banks have been knocked offline, and some 911 operating systems in local communities have not been able to boot up. ABC's Karen Travers has White House reaction.