SAO PAULO, Brazil - A boat ferrying at least 80 people home from a party sank in Brazil’s Amazon region early Sunday, killing at least 15 and leaving dozens missing, according to rescue officials and Brazil’s government. The wooden Comandante Sales ferryboat capsized in a pre-dawn rainstorm on the Solimoes River, one of the Amazon’s largest tributaries, said Fire Lt. Col. Raimundo Rodrigues da Silva.It was unclear how many passengers the Comandante Sales was authorized to carry, but authorities said the ferry had been grounded several months ago after failing an inspection. Boats serve as buses in the area because there are few roads.