William Bratton once ran the New York City and Los Angeles police forces. Now he's been hired to help New Orleans better security after last week's massacre on Bourbon Street.

The New Orleans Police Department has hired former New York City Police Commissioner William Bratton to review the city’s security plans and harden it against future attacks after last week’s deadly rampage on Bourbon Street.

Here's more about the former NYC police chief and how he might help after the deadly New Year's Day attack on Bourbon Street.