look, david axelrod has already announced that he is going to leave and we will start working on the campaign and david mruf, one of the architect of the 2008 campaign is going to be the campaign operative on the inside and he is going to come into the west wing. everybody is sort of a deputy chief of staff with pete rouse replacing the chief of staff. you talked about christina romer, he was replaced by a deputy in the economic team and this certainly is turnover, not a shake up. i want to underscore what mark said earlier. it is setting a different tone and this tone is sort of getting the team more focused on messaging and the campaign going forward because this is going to be political battles. there aren't going to be policy battles. at this point he needs, the president needs people around him that he's comfortable with him going into political battle and i think this is what you're seeing today with pete rouse.