Take ICF International for instance. When I joined them in 2007 they had a robust state and local consulting team spread out across the United States. To the best of my knowledge that the team I knew has just about completely turned over. There are less than half the people there now and none of the senior leadership that hired me or for whom I worked are with the company today (four years later). They look to have given up on state and local projects and are concentrating on the more lucrative Federal contracts back there in the beltway.
Which brings me to the recently announced merger between Witt and Associates and O'Briens They note that they each are bringing a different set of skills and abilities to the combined company. My major contact with O'Briens has been via their Pier System that can be used for notification and for coordination. It is the primary technology that the U.S. Coast Guard has used in recent years for emergencies and disasters, to include the Gulf Oil Spill. Witt and Associates has been around since James Lee Witt left government service and started the company. Their last big "win" was getting a contract with the State of New Jersey to help with Hurricane Sandy recovery
If you didn't know it, one of my co-bloggers at Emergency Management Magazine, Gerald Baron developed the Piers software solution and ran the company until he sold it to O'Briens.
