Joey Morrison adjusts his space helmet after watching the shuttle aircraft carrier with space shuttle Endeavour atop, land Wednesday, Sept. 19, 2012, at Ellington Field in Houston. Endeavour is making a final trek across the country to the California Science Center in Los Angeles, where it will be permanently displayed. (AP Photo/David J. Phillip

Photo by: David J. Phillip

Joey Morrison adjusts his space helmet after watching the shuttle aircraft carrier with space shuttle Endeavour atop, land Wednesday, Sept. 19, 2012, at Ellington Field in Houston. Endeavour is making a final trek across the country to the California Science Center in Los Angeles, where it will be permanently displayed. (AP Photo/David J. Phillip