The FBI is asking the public for help amid the investigation into the deadly attack on a crowd in New Orleans. They do not believe the suspect was acting alone. NBC News' Ken Dilanian reports more. Senior Vice President for Global Operations at the Soufan Group Christopher O’Leary, former FBI Assistant Director for Counterintelligence Frank Figliuzzi and retired ATF Special Agent in Charge Jim Cavanaugh join Christina Ruffini to discuss the latest.
