NEW ORLEANS - Police killed several men who shot at Army contractors; helicopters divided the city into grids and searched for waving survivors; and officials warned that the recovery of the dead would be ghastly. One week after Hurricane Katrina roared ashore, the latest issue for rescuers is residents who still refuse to leave. At least 59 bodies had been collected from Jefferson and Orleans parishes, including 10 at the Superdome. But identification of the dead, with corpses bloated and medical records submerged, was expected to be a major problem. The U.S. Public Health Service said one morgue alone, at...