At least 15 people have been killed and dozens injured in the U.S. city of New Orleans after a truck crashed into a crowd on New Year's Day. In a separate incident in Las Vegas, a Tesla Cybertruck exploded outside the Trump Hotel, killing one person. President Joe Biden stated that law enforcement is investigating whether the two incidents are related. CGTN's Asieh Namdar spoke with David Katz, founder and CEO of Global Security Group, who discussed the attack and the ongoing investigation.