The search for Nancy Guthrie, the 84-year-old mother of Today show co-host Savannah Guthrie, has received a major high-tech upgrade. Investigators are now using a specialized tracking tool called a “signal sniffer” mounted on a helicopter to try and locate her. The device is designed to pick up low-power electronic signals, like the ones given off by a pacemaker.
Ms. Guthrie has limited mobility and needs daily medication. According to CBS News, law enforcement sources confirmed that detecting the signal from her pacemaker is a primary focus for this new tool. The helicopter carrying this equipment is flying slowly and at a low altitude over the search area in Tucson, Arizona.
