Brian Laundrie's father has joined the hunt for his fugitive son in a Florida swamp. He arrived at the Myakkatchee Creek Environmental Park in a red pickup. The new twist comes after police discovered the remnants of a fresh campsite in the swamp. The area has been closed to hikers for weeks so they believe the campsite could be Laundrie's. But Callahan Walsh, co-host of "In Pursuit" with his father John Walsh, believes it may be a smokescreen.