Documents reviewed by Reuters make clear that the system, which is expected to be in place by Super Bowl Sunday, will offer little protection against vehicle attacks at any significant speed.

Multiple people have been killed after a vehicle drove into a crowd in Louisiana in the early hours of New Year's Day, according to reports. At around 3:15 a.m. in New Orleans, the vehicle drove into pedestrians at the intersection between Bourbon Street and Iberville,

Shamsud-Din Bahar Jabbar, 42, has been identified as the suspect who drove a car into a crowd of people along Bourbon Street around 3:15 a.m. on Wednesday morning. Jabbar was shot and killed by officers after opening fire on them during the attack. Two New Orleans police officers were injured.