Below is more from Jennifer Griffin:
According to US Navy officials:
The USS Mesa Verde is moving into Persian Gulf
With about 500 marines available to help evacuate Americans from Iraq if needed.
This is the 4th US naval vessel to move into the Gulf to assist with possible Iraq operations.
We had already reported on Sat that the USS George HW Bush carrier group was being repositioned in the Gulf – closer to Iraq.
In addition, the USS Philippines Sea, a cruiser, has entered the Gulf and the USS Truxton, a US destroyer.