HuffPost's live-updates article reports that the FAA's nationwide ground stop on Friday, lifted after roughly four hours, delayed nearly 10,000 flights and cancelled 5,000 as airports ran short of gate, tarmac, and taxiway space and NBA, NHL, and college teams scrambled to reach games. Officials blamed a communications-system overload, with Sean Duffy faulting Congress for underfunding equipment and Trump citing old, broken gear — though he posted on Truth Social about a bipartisan entertainment-industry bill, which HuffPost calls absurd next to his silence on the stop; Buttigieg, who led the department under Biden, says the system's redundancies should have caught the failure and urges answers over politics.