I expect the Stennis to relieve Enterprise as she is on the last months of her final cruise, I would expect her back around December at the latest.
The Truman has been doing sea trials and CQ's since leaving DPIA, I would expect it could be brought into action quickly if needed. The Washington left Yokasuka around Aug 20 and is on WestPac, and she could steam to the Gulf if needed before the Truman.
More importantly is where the LHD & LHAs are at. Iwo Jima was deployed 3/27 and is current 5th Fleet Flag, she'll have to be releived by year end unless something pops up. Bonhomme Richard is in 7th, and could steam into position easily enough, Wasp is in Atlantic. Others are in port. Boxer is working up in 3rd Fleet and could be made ready.
New moon tonight, haevn't heard any shots fired, but Bibi has issued his warnings, people are on notice. Next dark night not till 10/15.