CAPE CANAVERAL, Fla. - ? Today is the final voyage of the space shuttle Endeavour. Officials say hundreds of thousands of people are in Cape Canaveral to watch this afternoon?s liftoff.

President Obama and the first lady will be there with their daughters. Arizona Congresswoman Gabrielle Giffords, wife of commander Mark Kelly, will also be in attendance. Giffords is recovering after she was shot in the head less than four months ago in Tucson. This afternoon?s launch takes place at 3:47 p.m.