Matthew Livelsberger was a Green Beret, a member of the Army’s elite Special Forces, according to a U.S. government official.
The truck was rented to Matthew Alan Livelsberger, two senior law enforcement officials told NBC News. An Army spokesperson said Livelsberger was on approved leave.
A man "hellbent" on creating carnage drove around barricades and hurtled down Bourbon Street in New Orleans' French Quarter, police said.