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gupta our chief is waiting for you to land try and tell him yourself. will find it telling yourself. john hey you. offroad i'll tell him. do it. first fires create powerful columns they rise sharply and can easily overturn a trike despite the fact that the machine weighs around four hundred kilos. did not see any major fire breaks during his two hour flight safely back to. call a bitch everything's fine and dandy but i got delayed by having a flight appear to be forty minutes longer than intended i checked. the trust time called five of the five and sent my trucks immediately. with the. expedition is in its third day here but the weather is more favorable to date i expect it to be a great day for pilots being sure who will be joining our fellow pilots who'll be flying around in great numbers. tacl will be simply breathtaking. the instructor alexei sets off his going to size up the situation in the sky and the strength of the wind. the wind is so strong. that the most important thing is to move forward that's not happening right now so . i'll release the

sanjay gupta will be telling us all about it. >> reporter: most of the time we take it for grant. ♪ you'vee heart > the human÷há<:Ñ,a) beating all of two-and-a-half billion times during the course of an average lifetime. >> the organ that i work on every day. the demystified org3xhxv4 then there's the÷o5nhbv more sue parhz4yut of us where our emotin and devotion and love exists. >> reporter: later on sunday morning secrets of the heart. >> osgood: david martin has questions for former secretary of defense donald rumsfeld. serena altschul takes us back to the era of the boom box. seth doane digs his way deep into the salt mine. but first the headlines for the 13th of february 2011. we begin with the latest from egypt. egypt's military leaders have dissolved parliament and suspended the nation's constitution. that as pressing the army to release political prisoners. the opposition also says it's at work on proposal for a transitional government. o:k mccarthy in cairo. >> reporter: this morning soldiers who to leave tahrir square and let life return to normal. only a few listened and forlorhv