We are following breaking news as we come on the air, the stunning free fall crash as two Navy jets collide at an air show.

Dramatic new video of those planes tangling up as people watched from the ground.

The crew ejecting, parachuting past the smoke after the planes explode on impact.

You see it there.

Emergency crews rushing to the scene.

The late developments just coming in. Also tonight, menacing thunderstorms in Kansas. Plus, hail the size of golf balls.

The worst of it yet to come. In Minnesota, a new wildfire emergency. And in the east,

the big heat wave on the way. We're tracking it all. World health officials

sounding the alarm, declaring a global health emergency over the latest Ebola outbreak and new

developments on the cruise ship dealing with a deadly hantavirus outbreak. A political upset, proving

President Trump's tightening grip on the GOP, what we're hearing from Republicans now

ahead of key primaries this week with another Republican in the fight for his political life

after crossing the president. President Trump also warning Iran, saying the clock is ticking

to reach a deal. Could the fighting start again? Commencement speakers being booed by graduates.

The question is whether you will help shape artificial intelligence. We do not know.

The reason for the chilly reception at speeches meant to inspire the next generation.

On death row for decades, the prison inmate convicted with testimony from a hypnotized witness,

now fighting for his freedom.

Why fights erupted with chaotic crowds, swarming swatch stores, some even forced to close.

And there's good news tonight how a wrong number at the right time led to a life-changing

friendship. This is NBC Nightly News with Hallie Jackson. Good evening. We begin tonight with

breaking news and the dramatic scene at an Idaho air show captured on camera. Two Navy jets colliding. Look at this.

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