Pros
As a government contractor the benefits are good. If you have clearance there are many positions available. Their internal job search site is not friendly or easy to use. The process of applying for a position online is cumbersome - the process needs to be simplified.
Cons
There is no longer bench time if you are dropped from a contract. GDIT cuts you loose immediately telling you to continue to look for another position with them as an external candidate; however, their job search site is not friendly or easy to use. Make sure to get the names of recruiters before you leave the company so you can contact them directly about jobs. As a current employee if you want to move within the company you can get added to a list to receive new positions by email each day. But that is the most support you can expect from them.