Pros
Name recognition, Overall company stability (not individual stability). Some more tenured management employees are great to work with. Plenty of projects in the greater DC area to often choose from or switch between (especially if entry-level, non-management). Good first employer for recent graduates.
Cons
Smaller teams can largely exist independent of their home offices, yet on paper exist as a single entity. The problem with this is all communication can be routed through a single team leader, collaboration can cease to exist, HR problems develop (especially if with that team leader) and client relationship health is largely reported by a single individual, regardless of how accurate it is. This can (and often does) lead to a "high school cafeteria" type of environment. Mid to upper level management is increasingly made up of unqualified individuals, individuals fulfilling a larger goal of demographic diversity and individuals with poor managerial skills (if not good consulting skills). Assessment process riddled with inconsistencies, interpretations and "exceptions". A ton of lip service in policy establishment, management practices, consulting skills and day to day client relationship training. Training time increasingly unclear as to how it effects work schedule (recent policy change). Being 1° separated from the government has led to many government time-frame approaches to work and efficiency problems.