i don't think many other think that is likely. >> schieffer: david sanger. thank you so much, david. we'll be back. somewhere in america, there's a doctor who can peer into the future. there's a nurse who can access in an instant every patient's past. and because the whole hospital's working together, there's a family who can breathe easy, right now. somewhere in america, we've already answered some of the nation's toughest healthcare questions. and the over 60,000 people of siemens are ready to do it again. siemens. answers. >> woman: good night, gluttony-- a farewell long awaited. good night, stuffy. >> ( yawning ) >> good night, outdated. >> ( click ) >> good night, old luxury and all of your wares. good night, bygones everywhere. >> ( engine revs ) >> good morning, illumination. good morning, innovation. good morning, unequaled inspiration. >> ( heartbeats ) >> schieffer: white house chief of staff william daley was supposed to be our exclusive and sole guest this morning, but that was overtaken by events in egypt. we did want you to hear some of what he