Delta Air Lines is under investigation by the Transportation Department following a global IT outage that led to the cancellation of over 5,000 flights, causing significant disruptions, especially at Atlanta’s Hartsfield-Jackson International Airport. The airline's crew management system was severely impacted, leading to further delays and cancellations, with passengers facing long waits, unclaimed baggage, and difficulties obtaining refunds. Delta has apologized and is working to restore normal operations, but the incident has drawn comparisons to a similar meltdown at Southwest Airlines in 2022. Transportation Secretary Pete Buttigieg emphasized the need for Delta to uphold passenger rights, as complaints continue to rise. The situation highlights ongoing concerns about the resilience of airline IT systems and their impact on customer service.