>> november 22nd, 1963. the day begins with an exciting welcome for president kennedy outside his ft. worth, texas hotel. in nearby dallas, oswald goes to work with a hidden rifle. >> the blanket looked like equipment. i think it never occurred to michael it was a gun. >> 8:45 central time. in less than four hours, president kennedy will be dead. >> we'll be watching. we hope you join greg and the rest of the country. dana, you are up next. this week, a huge week for twitter. big ipo. i was watching with interest. i am quite a participant. what should my piece of the pie be? you can go on and find out how much of a contributor you are. there's all this math you can do. it turns out, twitter would owe me $77,000, no, 77,223, nearly