The Shuttle move was rescheduled from Monday.. Weather permitting the flight will take place tomorrow with a flyby over New York City before the combination lands at JFK!
They are swapping the shuttle from KIAD to the Enterprise to make room for Discovery which they delivered last week from Kennedy Space Center. The 747 and T-38 are both on the ramp at IAD loaded and ready to transport
The T-38 was the chase plane for the shuttle trip from the Kennedy Space Center to IAD. The Discovery was swapped out for the Enterprise at the Air and Space Museum, Hazy Center. The museum is on IAD property.