 Meanwhile, in Atlanta, flights out of the world's busiest airport are facing major delays tonight after a worldwide Microsoft crowdsource issue caused communication problems, forcing flights to be grounded earlier. From member station WABE, Julian Virgin has more. Thousands of passengers are stuck at Hartsfield-Jackson International Airport after the Federal Aviation Administration issued a ground stop for major U.S. airlines, including Delta, United, and American. I'm mad and I'm frustrated and I'm sad.