美国，2天超10000架次航班延误

Group 1 - The core issue is the significant impact on U.S. air traffic control due to the federal government shutdown, leading to increased flight delays and personnel shortages [1] - As of October 27, over 3,000 flights were delayed on that day alone, and on October 26, more than 8,600 flights experienced delays across the nation [1] - The shutdown, which began on October 1, exacerbates existing staffing shortages in air traffic control, and the situation may worsen as air traffic controllers will not receive their pay on the scheduled payday of October 28 [1]