Translation of corriente alterna

Yesterday, I heard a very good example to explain my point: On their journey more than ten years ago, the presidential couple Mr. and Mrs. Clinton visited Egypt. They were welcomed by the president.
I still needed to get to the traveler's agent nearby to book my flight back to Cancun. I gave myself two more days to stay in the region, as I wanted to make sure that the hurricane was over.
We returned before dusk, as we were afraid of not finding our ship in the dark. Once on the ship we decided to go for night swimming again in the open ocean. A few women on little boats approached us.