It may not the the big one, but apparently it's pretty fucking big.

It knocked out CrowdStrike, which on it's website boasts: CrowdStrike excels in the MITRE Engenuity ATT&CK Evaluation, Managed Services detection-only test.

All flights in the US are grounded. That's hasn't happend since 911 AFAIK. Flights Grounded Across US.

The airline said that flights already airborne will continue with their journeys but no more will take off.

"We are in contact with our planes currently in flight," the airline spokesperson said.