Deep floodwaters and the risk of more mudslides that left at least 34 people confirmed or presumed dead hampered search and rescue operations Sunday in southern Japan, including at elderly home facilities where more than a dozen died and scores were still stranded. Helicopters and boats rescued more people from their homes in the Kumamoto region. More than 40,000 defense troops, the coast guard and fire brigades were taking part in the operation. Large areas along the Kuma River were swallowed by floodwaters, with many houses, buildings and vehicles submerged almost up to their roofs. Mudslides smashed into houses, sending people atop rooftops waving at rescuers.