Pasco, a young black Labrador retriever on his first search and rescue mission, quickly picked up the scent on Anchorage Street. He led a Miami firefighter to the top of a rubble pile and jumped down the other side. ”Confirmed!” the firefighter shouted over the din of a helicopter passing overhead. “One deceased.” Pasco is trained to find live humans. Other dogs are trained to find human remains. But 48 hours after Hurricane Ian attacked this mellow beach town, emergency crews were discovering more dead people than they were saving trapped people. As bright sunshine lit up the clear blue sky F…