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By Rodrigo Santos Andrade
What is a ‘signal sniffer?’ High-tech track tool possibly used in Nancy Guthrie search
visibility comment0 event February 17, 2026 timer 11:49
Reports say authorities searching for Nancy Guthrie used a helicopter-mounted "signal sniffer" to track her pacemaker in hopes of locating her, but what is it?
Read more: https://www.usatoday.com/live-story/entertainment/celebrities/2026/02/17/savannah-guthrie-mom-nancy-updates-today/88694111007/
Tags: USA TODAY, USA TODAY News, USA TODAY Video
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