Tonight, late developments in two mass shootings, one here at home and one overseas with images of a hero bystander captured on camera.

At least 15 people killed when two attackers opened fire on a Hanukkah celebration at a world famous beach in Australia.

Video, look at this, showing people running for cover and the man who stepped in to take down one of the shooters,

a child and a rabbi among the dead.

Tonight, what we're learning about the father and son

who officials say carried out the attack.

The latest out of Brown University

and the deadly shooting there,

the campus put on lockdown, terrified students taking cover.

Hit, in the hands! The hours-long man campus put on lockdown, terrified students taking cover.

The hours-long manhunt to track down the gunmen, and tonight what we're learning about the person police have in custody.

A startling scene in the sky for a jet blue flight and a U.S. military plane in the air near Venezuela.

They passed directly in our flight path.

Tonight, the response from the Pentagon as the administration surges forces into the region.

The first big snowstorm of the season, blanketing states from the Midwest to the northeast,

cars stranded in the snow, and now a new danger, with tens of millions set to be hit by brutal Arctic cold.

The growing fallout after the University of Michigan football coach was fired and arrested,

why the school's entire athletic department is now facing growing scrutiny.

There is good news tonight about the grandma's giving advice and offering connection to complete strangers.

This is NBC Nightly News with Hallie Jackson. Good evening. We are coming on the air with that horrific Hanukkah attack overseas. 15 people dead, killed by a father and son targeting Jewish people, according to police.

Look at this video showing people who gathered in Bandai Beach in Australia.

They're sprinting to find cover.

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