Vehicle attacks are difficult to prevent — but New Orleans fell short, experts say 

 NBC News Top StoriesNew Orleans has 700-pound steel barriers but did not put them on Bourbon Street until a day after the attack, which the lieutenant governor called “a complete failure of responsibility.”

​New Orleans has 700-pound steel barriers but did not put them on Bourbon Street until a day after the attack, which the lieutenant governor called “a complete failure of responsibility.”  

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