Jee Biden, Gayle Benson, Helena Moreno and other officials attend a prayer service at Basilica of St. Louis King of France.

At a Mass celebrated Sunday at New Orleans' St. Louis Cathedral, just blocks from where a man sped down Bourbon Street in a deadly attack early on New Year's Day, a church leader acknowledged the sense of unease that remains and asked for prayers for victims and their families.

New Orleans mourned, wept and danced at a vigil Saturday evening along the famous thoroughfare where a man rammed a pickup truck into a crowd, killing and injuring revelers who were there to