More than 8,500 flights delayed in the US amid airport chaos; air traffic shutdown suspended in the country
US Secretary of Transportation Sean Duffy stated that American airspace was reopened at 8:15 PM US East Coast time.

TL;DR
- More than 8,500 flights were delayed in the US due to a nationwide airport service disruption.
- A national ground stop was suspended after a four-and-a-half-hour interruption, the longest since 9/11.
- The incident was attributed to a technical failure in obsolete air traffic control systems.
- Over 6,700 flights were canceled even after de-icing authorizations resumed.
- Microsoft also experienced and addressed a global service outage.