NEW ORLEANS -- Water levels dropped precipitously Monday in the worst of the flooded neighborhoods in and around New Orleans. Areas that had been under 6 to 8 feet of water less than two days earlier were dry at dawn, with ooze now smearing the streets and water collecting at low, marshy spots. For the first time in the 8th and 9th wards in East New Orleans and Mid-City neighborhoods, search and rescue crews were able to patrol on foot. By midday, National Guardsmen and Marines said they had found several corpses inside homes that had been inaccessible until today....