Pros
This is a great place to go if you are looking to get marching orders and not question them. There is minimal growth potential here. But if you are in a position where you either smile and nod for company's project of the week, then in general you can survive here. This is not a place to make your mark on the world, but it is a place to get affordable housing and hold out in a company that generally does not have many layoffs.
Cons
The main thing you will hear at the SSC is some variation of "that's the way we've always done it." As a company, they are extremely change averse. If you try to push any issue, the culture of conformity will be thrown at you in its entirety. Be prepared for heavy retribution from lower and middle management.