Business Insider reports that the Department of Transportation wants $50 billion to replace aging air-traffic-control technology after a ground stop on 13 November 2026 halted US departures, delaying roughly 10,000 flights and canceling nearly 5,000. Secretaries Sean Duffy and Markwayne Mullin blamed outdated equipment, ruled out a cyberattack pending investigation, and urged Congress to fund a complete system rebuild.