深夜，突发警告！

Core Insights - The U.S. government shutdown is significantly impacting air travel, with a warning from Transportation Secretary Sean Duffy that flight numbers will be drastically reduced ahead of the Thanksgiving holiday [1][2] - The Federal Aviation Administration (FAA) has mandated a reduction of daily flights by 4% at 40 major airports, which will increase to 10% by November 14 due to air traffic controller shortages [1][2] Group 1 - The government shutdown has lasted for 40 days, leading to a shortage of air traffic controllers as federal employees have not been paid for weeks [1][2] - Duffy indicated that the situation is expected to worsen, with many travelers unable to board flights as the number of available flights diminishes [1][2] - Major airlines, including American Airlines, Delta Air Lines, Southwest Airlines, and United Airlines, have already begun canceling flights in response to FAA directives [2] Group 2 - Since the shutdown began on October 1, the FAA has reported a decrease of 1,000 to 2,000 air traffic controllers from full staffing levels, with an increase in retirements and absences [2] - On a recent Saturday, approximately 1,550 flights were canceled and 6,700 were delayed, with similar numbers expected for the following day [2] - The FAA has received over 500 safety reports from pilots citing fatigue-related errors among air traffic controllers since the shutdown began [2]