Tonight, dangerous conditions on the last big weekend of summer with messy travel for millions ahead.

Lifeguards rushing into action, rescuing hundreds from life-threatening rip currents.

Other beaches closed from contamination.

In Colorado, heavy downpours and the storm clouds looming over Texas.

Look at that, under a flood watch. We're tracking

it all. Breaking tonight some Guatemalan children, the president's trying to deport, seen de-plaining

after dramatic holiday weekend legal maneuvers, the latest from a federal judge, plus a new

warning for Chicago ahead of what sources say will be an immigration crack down there this week.

Happening right now, police investigating after they say a man was found dead in a pool of blood

at Burning Man. Just in tonight what we know about the car crash that seriously hurt former

New York City Mayor Rudy Giuliani. Overseas Israel launching deadly strikes in the

push to seize Gaza City and new reporting on what the White House could do once the war is over.

The Chinese president, with a rare show of force alongside other world leaders, including Vladimir

Putin and Kim Jong-un this week. We'll take you there.

Look at that, a child walking on top of the monorail tracks at Hershey Park.

We'll show you what happened after somebody jumped up to try to help.

There's good news tonight about a small act of kindness that paid off in a huge way.

This is NBC Nightly News with Hallie Jackson.

Good evening.

We begin tonight with the dangerous conditions on this busy holiday Sunday at beaches along the West Coast and beyond.

Rescue after rescue, dozens of them. You see lifeguards racing into the water in L.A. to help people

pulled away by life-threatening rip currents. It's a dramatic end to the summer season. And as people

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