Delayed passengers wait and queue with their luggage at Terminal 3 of London Heathrow airport, west of London on September 8, 2026, following major disruption due an issue affecting the NATS air traffic control systems. Flights to and from the UK were cancelled on on September 8, due to a "technical issue" affecting UK's National Air Traffic Services (NATS), which says it is working to resolve the situation. (Photo by Henry NICHOLLS / AFP via Getty Images)