Ten Houthi rebels were killed in a U.S. helicopter attack in the Red Sea, port officials in Yemen told the French news agency AFP. "Four survivors arrived in Hodeidah along with two wounded," said one of the sources on condition of anonymity. Earlier, the U.S. Central Command (CENTCOM) announced that helicopter gunships sank three Houthi rebel boats that attacked a ship that issued a distress call. (AFP)