 This is affecting tens of millions of people from Sydney to Boston, Massachusetts. The good news though, American Airlines is back up and running after an hour's long ground stop. Delta getting back online as well, but this affects more than just airlines. A communication system that runs check-ins at airports, keeps flights on time, keeps banks running, has been down. It's related to Microsoft and the company CrowdStrike, where the CEO there today said, this is not a security incident or cyber attack. The issue has been identified, isolated, and a fix has been deployed.