60 Minutes 5/16

60 Minutes

More police departments across the U.S. are using facial recognition technology, but there aren't well-established national guidelines on how it should be used. Anderson Cooper tells us more. Next month, a government report is expected to be made public on sightings of unidentified aerial phenomena, better known as UFOs. Bill Whitaker reports on the sightings. And Tennis legend Rafael Nadal tells Jon Wertheim that self-doubt is the key to his success. Those stories on this week's "60 Minutes."

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