A neighbor’s Nest security camera records Matthew Jadlocki as he leaves for a run through the Morningside neighborhood. Minutes after this image was captured, the 36-year-old teacher went into cardiac arrest. The security camera footage helped police and Jadlocki’s family trace him to Emory University Hospital, where he’d been admitted as a “John Doe”.

Please see the following link:
https://www.wabe.org/bystanders-who-perform-cpr-exponentially-increase-survival-rates-one-atlanta-man-knows/