A Pentagon official said the U.S.S. Carney shot down the drones as several commercial ships nearby came under fire on Sunday, in attacks that U.S. Central Command said came from Iran-backed Yemeni Houthis.A Pentagon official said the U.S.S. Carney shot down the drones as several commercial ships nearby came under fire on Sunday, in attacks that U.S. Central Command said came from Iran-backed Yemeni Houthis.