 The Federal Aviation Administration says it worked with U.S. airlines who requested assistance with ground stops. In a post on X, the FAA says it was, quote, closely monitoring a technical issue impacting IT systems at U.S. airlines. It appears the technical issue was caused by a software update from the cybersecurity firm CrowdStrike. CrowdStrike says this is not a security incident or cyber attack. The update caused computers running Microsoft Windows operating systems to crash.