Pros
The work is real, unquestionably valuable to the mission, and results are foremost in the minds of all employees. This is no place for playing games on company time, but rather a place where the mission is so challenging that you become immersed in the goals.
Cons
Cosmic AES does work for the government! Therefore there are many extra rules and burdens imposed by the government. They aren't excessive and generally don't interfere, but they are there.