* It's a giant organization and it has the stiff culture that accompanies such an environment. Not much they can do about that, just not my style.
* It seems that lots of people are lifers. There's not much room for advancement in such a situation.
* Lots of the work is just maintaining bureaucracy. It's important work, that furthers an important mission, but it's not hard to imagine yourself as another cog.
That's maybe the worst I can say about the place. It's just work. Sure, it's bland, but it's not evil. It's not grueling. It's dull maintenance.