Yemen’s Houthi rebels launched multiple drones and a missile at three commercial ships being escorted in the Gulf of Aden by U.S. Navy ships, a U.S. official said Tuesday. The three U.S. affiliated flagged ships were sailing east toward Djibouti.

The is no evidence the Houthis successfully struck a U.S. warship. All three commercial vessels escorted by the Navy reportedly are intact and en route to their destinations.