Nancy Guthrie latest: DNA from recovered glove undergoing lab testing, FBI says

While detecting the signal of Nancy Guthrie’s pacemaker may be like searching for a needle in a haystack, an expert says it remains the best hope of finding the missing 84-year-old, Griff Jenkins, co-host of “FOX & Friends Weekend,” reported from Tucson, Arizona, on Tuesday morning.

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Jenkins reported that Dave Kennedy, who created the new Bluetooth “signal sniffing” technology, told him that the type of pacemaker Nancy Guthrie has is “the best we could hope for.”

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“It essentially every one to three minutes sends a simple ping up that says, ‘Hey, iPhone. Are you there?’ Well, in this case, if the ‘signal sniffer’ in the sky can pick it up, it can locate it, do a triangulation of directional antennas and within an hour they could possibly find her,” Jenkins reported.

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Jenkins also flew in a helicopter over the search area’s challenging terrain of rough hills and steep culverts, providing a birds-eye view similar to what law enforcement has seen while using the new high-tech Bluetooth scanner in the search for Nancy Guthrie.

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“It’s much like hunting for a needle in a haystack,” Jenkins said.