David Kennedy, former NSA hacker and Marine Corps cyber operator, joins ABC News Live to break down the use of doorbell cameras in the Nancy Guthrie search.
David Kennedy, former NSA hacker and Marine Corps cyber operator, joins ABC News Live to break down the use of doorbell cameras in the Nancy Guthrie search. US David Kennedy, former NSA hacker and Marine Corps cyber operator, joins ABC News Live to break down the use of doorbell cameras in the Nancy Guthrie search.