Either your brand new out of college and don’t know any better or you’re collecting two retirements already and do the bare minimum.
The place is not what it used to be. After going public, the place nose dived. It’s not about solving problems any more for the client, it’s about government staff augmentation. Take a cubby in a cubicle farm plantation and do the job of a government worker. Without the benefits of security. Yes, you may be paid a bit more as a contractor, but you exchange that for being treated like garbage on the client site.
Better to work in a company that has nothing to do with the government.