It's been 16 days since Gabby Petito's fiancé, Brian Laundrie, allegedly told his parents he was going for a hike in a sprawling Florida nature preserve. It's the site of a massive manhunt - but one seasoned U.S. Marshal says he doesn't think Laundrie was ever there. This week on The Debrief, retired U.S. Marshal Craig Caine gives Pei-Sze Cheng his take.

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