Tonight on the front lines of California's biggest wildfire of the summer, the intense flames expanding to 82,000 acres as wind and dry conditions push fires across the west.

Hundreds of structures threaten, keeping crews on their toes.

Across the country, skies choked with bad air, causing poor visibility, slowing flights.

Al Roker tonight standing by to tell us when it will all let up.

Also breaking the man hunt and arrest of a man accused of killing four members of one family,

the surveillance video of his final hours at large, and how this morning

he was finally spotted inside the woods.

Plus the new subpoenas in the Jeffrey Epstein case, House Republicans targeting the Clintons

and more, the new pressure on the Trump administration to release documents in that case.

What sank the Titan submersible, the new report saying it was preventable,

and that the company owned it, was warned its design was flawed for years,

and that the hall was damaged before the doomed journey to the deep.

Tonight, how the company's leaders allegedly silenced concerns.

The devastating flash flood

inundating a village in India, rescuers describing the near impossible effort to save lives.

And 80 years later, the moment that changed war forever. We return to Hiroshima, the site

where the U.S. dropped the bomb, and President Truman threatened

a reign of ruin. Our team speaking to survivors about echoes of the past and their warnings

for the future. And the heroes in a helicopter, when two of Baltimore's finest got a call

about a man drowning, their quick- thinking emergency landing to save his life.

You'll see the video. Nightly News starts right now.

This is NBC Nightly News with Tom Yannis reporting tonight from Miami.

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