 In the wake of Katrina, however, the department switched to a dark blue uniform shirt in order to avoid potential problems from people, including officers dismissed after the hurricane who may have attempted to illegally pass themselves off as police officers.Beginning on Friday, February 13, 2009, during the annual Mardi Gras celebration, NOPD officers permanently returned to wearing powder blue uniform shirts.In fall 2007, the Fox television network dramatized post-Katrina New Orleans in the short-lived police drama "K-Ville" starring Anthony Anderson and Cole Hauser as NOPD detectives working for the Felony Action Squad (FAS).