Pros
I worked for a small group who was formerly part of a smaller company that GD had bought out. Within my immediate circle of coworkers and management, we were well taken care of. Concerns were always addressed and time off was given without hassle as long as the job was being done and the client was happy. We also regularly got together for lunches to touch base. I was very well-trained on the job and given plenty of time to acclimate before "thrown in." There was an overall sense of comraderie and openness that made it almost a perfect work situation.
Cons
The benefits weren't the greatest, but probably comprable with what most of us are getting nowadays. Aetna PPO... very limited on who you could see. I think that it's quite possible that outside of out little corner of GD, there were the typical politics and dog-eat-dog sort of corporate issues. If you can, stick to the Anteon crew. That's the name of the company my program had come from. This was a smaller company and GD basically just absorbed all the same people. We provided orientation courses to different agencies within DOD. It was a well-respected program by its clients.