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Investigators are using a tracking device called a “signal sniffer” that can detect signals emitted from electronic devices as the search for Nancy Guthrie continues in its third week.  

David Kennedy, a former NSA hacker and inventor of the signal sniffer being used in the investigation, told CBS News that because Guthrie’s pacemaker was disconnected from the app on her phone, it indicates the device is equipped with Bluetooth Low Energy technology, a power setting designed so the device will last multiple years. 

Nancy Guthrie, the 84-year-old mother of “Today” show co-host Savannah Guthrie, was reported missing when she failed to show up for church on Feb. 1, after vanishing in the middle of the night from her home in Tucson, Arizona, in an apparent abduction. Authorities said Guthrie’s pacemaker was disconnected from the pacemaker app on her cellphone at 2:28 a.m.

Kennedy said Bluetooth Low Energy only has a 10- to 15-foot radius, but with signal amplifiers and high-gain antennas, the radius can extend to several hundred feet.  

He said after conducting a test at his home using a non-commercial drone and off-the-shelf items to modify it, he was able to extend the device’s detection range to about 800 feet. 

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“With amplification, with the ability to deploy things like drones or leveraging helicopters, they should be able to cover a lot larger area and then really home in just from a few meters to the actual signal itself,” Kennedy told CBS News. 

Since the pacemaker sends out a Bluetooth signal every two to three minutes, the signal sniffer can pick up its location, Kennedy said, which law enforcement would be able to view and trace using Nancy Guthrie’s phone. 

The tracking tool was mounted on a helicopter on Monday, law enforcement sources told CBS News. The helicopter carrying the device was flying slowly at a low altitude over the area where investigators are still hoping to find Guthrie, the sources said. 

Kennedy said he believes the helicopter was used as a quick stopgap to get a general location to see what was happening in the area. He said a signal sniffer could be fixed to a drone or a car, though a drone is more efficient because it can cover greater distances faster, and that using a helicopter or car could interfere with the signal due to metal buildings or concrete walls. 

Since signal sniffers are considered a new capability for law enforcement, Kennedy said officials don’t have massive fleets of drones being used, and that it will take time to build out the infrastructure to do so. He said if there were around 50 to 60 drones covering 300 to 800 feet, it would speed up the process.

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“You can really cut that time down pretty substantially across the board, you’re probably talking, a day or a few days or a maximum of two weeks of being able to cover 120-foot-mile radius, to be able to actually identify it,” Kennedy said. “It really comes down to manpower, drone operators [and] the drone technology itself.”

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How a Beer Hall Keeps Up With a World Cup Crowd

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The fans see the games, the crowds, the food and the beer. But behind every World Cup watch party is a team working long before kickoff and well after the final whistle. We go behind the scenes at a beer hall in Brooklyn to see what it takes to serve a room full of soccer fans on game day.

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With the white nationalist group Patriot Front, what you see is not what you get

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With the white nationalist group Patriot Front, what you see is not what you get

Members of the group Patriot Front ride the subway as a commuter looks on, in Washington, D.C., on July 4.

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The sight of hundreds of masked men roaming the streets of Washington, D.C., on July Fourth weekend, wearing khakis, blue shirts and uniform patches, was chilling to some of the city’s residents.

For many Americans, it was the first they heard about Patriot Front, a white nationalist organization that was born out of the deadly 2017 Unite the Right rally in Charlottesville, Va. A now-viral Reuters photo prompted reflections on the experience of a lone African American woman who was photographed in a Metro subway car, surrounded by white supremacists.

The planned demonstration of force was timed to bring a fringe group of extremists into public view as the nation marked 250 years of its independence. Indeed, the stunt succeeded in earning the group media coverage across mainstream outlets, amplifying its brand and potential to reach new recruits. On this occasion, the members refrained from engaging in violence and property damage, projecting an image of law-abiding, orderly activism.

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But those who are closely familiar with Patriot Front’s history and operations warn: Don’t believe what you see.

“That is not who they are in private,” said Len Kamdang, director of the Criminal Justice Project at the Lawyers’ Committee for Civil Rights Under Law. “Although they were on their best behavior [last] weekend, this is a dangerous group that commits acts of violence all over the country.”

Patriot Front’s history of violence and property damage

Kamdang’s organization sued members of Patriot Front for vandalizing a public mural dedicated to the tennis legend and Black activist Arthur Ashe in Richmond, Va., in 2021. Ashe, who was inducted into the International Tennis Hall of Fame in 1985, was born in Richmond and his legacy is a continuing source of pride to members of that community.

“A couple of Patriot Front members showed up under cover of night and vandalized the mural,” Kamdang said. “They painted white stencils all over. … They literally tried to whitewash him and they put their symbols of hate all over — their stencils, their slogans. And all the while they were caught on video. And that video leaked using some of the most horrible language that you can imagine.”

In many jurisdictions, law enforcement can seek additional hate crime charges or sentencing enhancements in cases where illegal acts appear to have been motivated by racial bias. But in this case, Kamdang said, Patriot Front members faced no criminal charges and their identities were only revealed when online activists later infiltrated the group and leaked internal records.

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Graham Platner makes it official in Maine, submitting paperwork to leave Senate race

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Graham Platner makes it official in Maine, submitting paperwork to leave Senate race

Now-former Democratic Senate candidate Graham Platner speaks at his primary election night event on June 9 in Blue Hill, Maine. Platner officially dropped out of the race July 10 following rape allegations from a former romantic partner that he denies.

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Graham Platner, Maine’s Democratic nominee for Senate, is officially out of the race.

The Maine Secretary of State said Platner filed the necessary paperwork to withdraw his candidacy two days after he announced he planned to do so following an accusation of rape by a former romantic partner. Platner denies the allegation.

The Maine Democratic Party has until July 27 to pick Platner’s replacement.

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In his withdrawal notice, Platner said “people are desperate for change” and that’s why they voted “for a new kind of politics” by making him the Democratic nominee. He expressed gratitude for those who supported his campaign and said that he will continue to fight for “the movement we have built together and the future we believe in.”

He ended his notice with a strong statement aligned with the progressive platform.

“F*ck ICE. Free Palestine. Up the Hearts.”

Platner announced his plan to withdraw from the race in an 11-minute video he posted to social media on July 8. He said he had no choice but to suspend his campaign, citing it was no longer viable financially.

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“We are going to lose our ability to fundraise. We are going to lose our ability to access voter data. We are going to lose all of the things that any campaign needs on the basic level simply to function,” he said.

Platner added that dropping out was not an admission of guilt. Rather, the decision, he said, is to keep the progressive movement in Maine alive to defeat Republican Sen. Susan Collins in November. Platner blamed the “political establishment” for his downfall and argued the goal was to force him out of the race.

“We built a campaign. We engaged in electoral politics. We motivated people. We banded together. We did it the way that we were told we are supposed to make change and we won. And now they are not going to let us have it. Not if it’s me,” he said.

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