You will learn how pacemaker data has already sharpened the timeline in Nancy Guthrie’s disappearance and what investigators can — and cannot — hope to get from the device and its manufacturer. Law ...

TUCSON, Ariz. (KVOA) - On Feb. 3, two days after Nancy Guthrie disappeared, a Pima County helicopter was flying low to the ground, just above Guthrie's home in the Catalina Foothills. Investigators ...

TUCSON, Ariz. (KOLD/Gray News) - As the search for 84-year-old Nancy Guthrie enters its third week, the FBI is employing new technology that could help locate her using signals from her pacemaker. Law ...

However, Wright believes the helicopters could interfere with the signal’s reception and not get low enough to connect. That’s why he and cybersecurity expert Dave Kennedy developed the device for a ...