The Saudis have long range radar on the coast, but they were all looking south at the Strait of Hormuz where the latest trouble has been.
The attack came from the north. We don’t have AWACs in the area, they are over Syria and western Iraq, very busy theater.
Not sure if this is related, but it is interesting:
U.S. Transportation Command ordered a turbo activation of 28 logistics ships spread across Military Sealift Command, yesterday.
The activation, the largest of its kind since Operation Iraqi Freedom, rapidly transitions ships from a semi-dormant, reduced operating status to a fully crewed ship ready to sail within five days.