Investigators are using signal sniffer to try to detect Nancy Guthrie's pacemaker.

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Greg McFarlane is a financial writer and co-founder of ControlYourCash.com. He is also the co-author of Control Your Cash: Making Money Make Sense. Matteo Colombo / Getty Images Get personalized, ...

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Federal authorities have deployed a 'signal sniffer' mounted to a helicopter in the latest attempt to find Today show host Savannah Guthrie's mother. Local and federal investigators have been ...