Actor Paul Walker is in New Orleans for the filming of the suspense thriller, “Hours,” about a father struggling to keep his newborn daughter alive in a New Orleans hospital ravaged during Hurricane Katrina. “The Fast and the Furious” star plays the role of Nolan, a father trying to keep his daughter alive in an incubator through power outages, rising floodwater and descending chaos of that storm. The film marks the directing debut of screenwriter Eric Heisserer, whose previous works include “The Thing” and “Final Destination 5”.