Tonight on PBS News Weekend, on paper, they seem like ideal job candidates, but in reality, they're North Korean operatives.

Complex tech scams are infiltrating the American workplace and helping fund North Korean weapons programs.

Then, with the nation's 250th birthday a year away,

celebrations have begun.

We look at the innovations that have shaped America and where the country goes next.

There was no time at which we stopped innovating and changing.

And we have to go and use those examples to help us in a conversation today about what we can do as citizens to do better.

And what's behind the boom in secondhand shopping as more Americans turn to thrifting? Good evening.

Across the hill country of central Texas today, rescue workers are urgently searching for the missing after a wall of water

rushed through an area known as Flash Flood Alley in the early morning hours of July 4th.

At least 32 people are dead. Still unaccounted for are 27 children who were attending a Christian

summer camp on the Guadalupe River.

Officials say it's unclear how many are missing from other locations.

Ali Rogan has our report.

Months worth of torrential rain fell in just a few hours in Kerr County,

leaving houses and trees submerged in the floodwaters. Nearby, the National Weather Service tracked

the Guadalupe River as it swelled 22 feet in two hours. At 29 and a half feet, the gauge

failed. The rushing waters dumped debris on roads, which made it hard for emergency vehicles

to get through.

Crews worked overnight to locate people who were still unaccounted for.

People were screaming.

Others like young camper Peer's Boyett were left to their own devices to escape the fast-moving

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