Mardi Gras has been deemed the highest threat level under the Department of Homeland Security's Special Event Assessment Rating system for the first time, in response to the Jan. 1 vehicle attack on Bourbon Street that killed 14.

One week after the deadly attack on Bourbon Street in the early morning hours of New Year's Day, New Orleans has brought in a security expert to help guide the city's plans in the near future. As the city faces lawsuits and investigations concerning the supposed mismanagement of safety barriers,

Following a New Year’s Day attack that killed 14, the Louisiana city known for its colorful Carnival festivities and parades is grappling with how to celebrate—and do so safely—in the wake of tragedy.