white house with the very latest, john roberts. john, what is the latest there? sean, it's unclear, no way to know how long the president will be at the walter reed national medical center. it's going to be a few days at least until the end of the weekend, probably into next week depending how he does with the treatment. because the president, because of his age, he's in a high risk category. really as a precaution, it's a dramatic precaution, they decided, the white house physician and the white house staff to take him over there because there's a suite of offices at walter reed that he can work out of, have all the facility he needs to be the president of the united states and be only moments away from some of the world's best medical care if needed. you saw the video that you played there of the president just before he left the residence. we saw the video of the president walking out to the helicopter. you can see it in the lower screen. him walking off of the helicopter at walter...