Being that we don’t have cloaking devices for our ships just yet, the fact that it sticks out like a sore thumb on the horizon was not missed by the Sudanese pirates and the rest of the ships traveling that corridor and they all have radios.
To make another point, the fact that we learn it is on station with an existing carrier already under a certain amount of surveillance by our “friends” in the neighborhood, I’m sure it is no surprise to them as well. They did keep it quiet that it was moving and the reason for the move so let them wonder what is up, especially Achmadinejad.
I'm glad to hear that they did leave quietly, with no rambunctious partying. That might have offended someone.