Final flight: Space shuttle Enterprise's voyage into history

May 13, 2012: Space shuttle Enterprise, mounted on transport vehicle, is backed into a temporary hangar after being demated from the NASA 747 Shuttle Carrier Aircraft. Enterprise will be placed on a barge that will move by tugboat up the Hudson River to the Intrepid Sea, Air & Space Museum in June. (AP Photo/NASA, Kim Shiflet)

May 13, 2012: The space shuttle Enterprise hangs in the air at John F. Kennedy International Airport in New York, after it was lifted from a NASA 747 Shuttle Carrier Aircraft in preparation for its upcoming journey to its new home at the Intrepid Sea, Air & Space Museum. The shuttle is scheduled to open to the public in mid-July. (AP Photo/Craig Ruttle)

May 13, 2012: Space shuttle Enterprise hangs from a sling after being demated from the NASA 747 Shuttle Carrier Aircraft at John F. Kennedy International Airport in the Queens borough of New York. Enterprise will be placed on a barge that will move by tugboat up the Hudson River to the Intrepid Sea, Air & Space Museum in June. The shuttle will be lifted by crane and placed on the flight deck of the Intrepid, where it will be on exhibit to the public starting this summer in a temporary climate-controlled pavilion. (AP Photo/NASA, Kim Shiflet)

In this photo provided by NASA, the space shuttle Enterprise rests atop of the NASA 747 Shuttle Carrier Aircraft for transport to New York at Washington Dulles International Airport, Friday, April 20, 2012, in Sterling, Va. Enterprise is expected to go on display at the Intrepid Sea Air and Space Museum in New York. (AP Photo/NASA, Bill Ingalls) ((NASA/Bill Ingalls))

Apr. 26, 2012: Shuttle Enterprise touches down, following its final flight to New York City, where it will find a home on a floating museum in the Hudson River. (Fox News Network)

Apr. 26, 2012: Shuttle Enterprise touches down, following its final flight to New York City, where it will find a home on a floating museum in the Hudson River. (Fox News Network)

Apr. 26, 2012: Shuttle Enterprise soars over Manhattan en route to its final resting place. (Fox News Network)

Apr. 26, 2012: Shuttle Enterprise soars over Manhattan en route to its final resting place. (Fox News Network)

April 27, 2012: Space shuttle Enterprise, riding on the back of the NASA 747 Shuttle Carrier Aircraft, cruises over the New York City skyline as it makes its way to John F. Kennedy International Airport, seen from Union City, N.J. (AP Photo/Julio Cortez)

Apr. 27, 2012: People watch from the balcony of a building as the space shuttle Enterprise, riding on the back of the NASA 747 Shuttle Carrier Aircraft, cruises over the Hudson river in New York. (AP Photo/Mary Altaffer)

Apr. 21, 2012: The space shuttle Enterprise is mated on top of the NASA 747 Shuttle Carrier Aircraft at Washington Dulles International Airport, in Sterling, Va. Space Shuttle Transition and Retirement engineers Saturday completed the final steps to ready Space Shuttle Enterprise for its flight to New York's John F. Kennedy International Airport. Enterprise will go on permanent display at the Intrepid Sea Air and Space Museum in New York in June. (AP Photo/NASA, Bill Ingalls)

Apr. 21, 2012: Space Shuttle Transition and Retirement engineers Saturday completed the final steps to ready Space Shuttle Enterprise for its flight to New York's John F. Kennedy International Airport. The space shuttle's scheduled arrival in New York was pushed back a few days because of possible bad weather. (AP Photo/NASA, Bill Ingalls)

Feb. 18, 1977: Americas Space Shuttle Enterprise, rides atop a giant 747 on its first test flight at Edwards Air Force Base, Calif. (AP Photo)

Apr. 21, 2012: Orbiter Transition and Retirement team member Tom Goebel monitors the installation of rain covers over space shuttle Enterprise's vent door openings. (AP Photo/NASA, Bill Ingalls)

Nov. 20, 2003: Workers pose in front of the Space Shuttle Enterprise prior to moving it into the new Steven F. Udvar-Hazy Center at Dulles Airport in Chantilly, Va. (AP Photo/Lisa Nipp)

In this photo provided by NASA, the space shuttle Enterprise rests atop of the NASA 747 Shuttle Carrier Aircraft for transport to New York at Washington Dulles International Airport, Friday, April 20, 2012, in Sterling, Va. Enterprise is expected to go on display at the Intrepid Sea Air and Space Museum in New York. (AP Photo/NASA, Bill Ingalls) (AP2012)

Apr. 27, 2012: The space shuttle Enterprise departs from Dulles International Airport in Virginia. The Enterprise, atop a NASA 747 transport jet, is en route on Friday to New York City where it will go on display later this year. (REUTERS/Gary Cameron)

Apr. 20, 2012: The space shuttle Enterprise rests atop of the NASA 747 Shuttle Carrier Aircraft for transport to New York at Washington Dulles International Airport, in Sterling, Va. (AP Photo/NASA, Bill Ingalls)

Apr. 20, 2012: The space shuttle Enterprise rests atop of the NASA 747 Shuttle Carrier Aircraft for transport to New York at Washington Dulles International Airport, in Sterling, Va. (AP Photo/NASA, Bill Ingalls)

Apr. 20, 2012: The NASA 747 Shuttle Carrier Aircraft moves into place for mating underneath the space shuttle Enterprise for transport to New York at Washington Dulles International Airport, in Sterling, Va. (AP Photo/NASA, Bill Ingalls)