Pros
It's very structure and your role is very well designed. If you are not a manager you can manage a 40 hour work week.
Cons
It's a bureaucratic culture will bog you down. The number of meetings I had on a weekly basis were ridiculous. I was a manager and I spent at least 30% of my time in meetings and most were not productive. GD-AIS has a policy that all stake-holders have to be in management meetings, including engineering, program management, legal, contracts, and finance. The problem with this is that everyone feels that they have to give an opinion on everything. Listening to contracts give their opinion on the financial performance or finance giving their opinon on the engineering solutions was a huge waste of time in the meetings.