BREAKING VIDEO: The Saudis report a combined attack by UAVs and ballistic missiles at the town of Khamis Musayit in western Saudi Arabia.  
The shooting originated in Yemen and was apparently carried out by the Iran-backed Houthi organization on the King Khalid Air Base of Royal Saudi Arabia Air Force at Khamis Mushait.

There were Intel reports all day long that an attack was expected.

Video: Social Media