I work for the Navy and used to be the production manager for the E-2C, so I spent lots of time in St. Augustine (Jim B., it's a great place!) I also spent lots of time in their Bethpage NY facility and have a good friend who left Pax River to move up there and work for them.
The Newport News facility was acquired when NG bought Litton. I don't know much specifically about that division.
Overall, I think NG is a great company to work with. They are very committed to their product. Given who the customer is, (our soldiers, sailors, airmen and marines) I think that's the most important thing. Good luck with your decision.