evening at the hospital. ♪ commencing countdown ♪ ♪ engines on ♪ ♪ check ignition and may god's love be with you ♪ >> the space shuttle "endeavor" shipped up to the international space station wednesday morning. this is its final mission. >> i was rendezvousing with the space station -- it's a very complicated procedure -- and doing all this while gabby's getting brain surgery. >> she needed a cranioplasty, and that was replacing part of the skull that was removed. gabby was also developing a serious condition call hydrocephalus, that could hamper her recovery.