Giffords' Journey to Houston Rehab Facility

Jan. 21, 2011: Rep. Gabrielle Giffords is loaded into an ambulance as part of the first leg of a trip to Houston's Texas Medical Center (Jennifer Polixenni Brankin)

Jan. 21, 2011: People wave and applaud as the ambulance carrying U.S. Rep. Gabrielle Giffords, D-Ariz., leaves University Medical Center in Tucson, Ariz. Giffords is being transported to a medical facility in Houston. (AP) (AP2011)

Jan. 21, 2011: A police motorcade leads the ambulance carrying U.S. Rep. Gabrielle Giffords, D-Ariz., away from University Medical Center in Tucson, Ariz. Giffords is being transported to a medical facility in Houston. (AP) (AP2011)

Jan. 21, 2011: Rep. Gabrielle Giffords is moved into a jet as part of the second leg of a trip to Houston's Texas Medical Center (Jennifer Polixenni Brankin)

Jan. 21, 2011: Rep. Gabrielle Giffords husband, U.S. Astronaut Mark Kelly, waves from the jet that would carry Giffords to Houston. (Jennifer Polixenni Brankin)

Jan. 21, 2011: Arizona citizens offer encouragement to Rep. Gabrielle Giffords before her Houston departure. (Jennifer Polixenni Brankin)