Pros
I was a contractor for an associate software engineer position for $25/hr. I was paid on time. You work a lot more than you are paid for, but it is very nice to work with such a large organization. It is a big place. I am sure there are some good teams there.
Cons
The details of the job were hidden behind senior employee's egos. I was constantly reminded that I was a contractor and not an employee. There was an enormous lack of communication. I was constantly being cussed at and berated. I guess management was constantly overworked. There was a lot of negative gossip initiated by management. Obviously, you work hard and feel good about your work and are let down when after looking people in the eye day in and day out and dealing with a lot of nonsense you receive a call from a contract representative you've met once saying you are no longer employed. A lot of micromanagement.