Tonight, global travel chaos. London's Heathrow Airport just coming back online after a dramatic

fireball caused all runways to be shut down.

The planes lined up, stranded passengers forced to navigate terminals in the dark, what caused

the meltdown.

Elon Musk at the Pentagon, the president saying it was about cost cutting, slamming a new

report that Musk was there to see potential war plans about China.

And the Tesla CEO turned presidential advisor trying to assure his own employees.

To read the news, it feels like, you know, Armageddon.

Telling them to stay the course as Tesla cars come under attack and more owners look to ditch their once-priced electric vehicles.

The new image is just released by NASA showing astronauts Butch Wilmore and Sonny Williams back in Houston.

Richard Engel on the ground in Syria, his rare look inside the prison, holding 10,000 alleged ISIS fighters, the growing global terror concerns.

The mystery surrounding a family gone missing in Arizona.

Was this massive highway pile-up responsible what the sheriff's office leading the investigation told our Dana Griffin?

This is NBC Nightly News with Lester Holt. the sheriff's office leading the investigation told our Dana Griffin.

This is NBC Nightly News with Lester Holt.

Good evening and welcome.

One of the world's busiest air hubs, London Heathrow, is slowly coming back to life tonight after an electrical substation fire knocked out power to the airport last night, forcing the airport's closure

and grounding flights from far-flung destinations around the world, including flights to and from

the U.S. This was the scene at airports from New York to Delhi, passengers waiting for word on their

flights. An estimated 1,300 flights impacted along with 200,000 passengers.

And tonight, even as service is starting to resume from Heathrow, passengers are being told

not to leave for the British airport until told by their airlines. These images from flight

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