This photo provided by NASA shows space shuttle Endeavour atop NASA's Shuttle Carrier Aircraft, or SCA, at the Shuttle Landing Facility at NASA's Kennedy Space Center on Monday, Sept. 17, 2012 in Cape Canaveral, Fla. The beginning of Endeavour's final flight to California has been postponed because of weather along the flight route. NASA had planned for the 747 carrying the shuttle to take off from Kennedy Space Center on Monday. (AP Photo/NASA, Bill Ingalls)