The Space shuttle Discovery does a flyby before arriving by 747 carrier aircraft at Washington Dulles International Airport, Chantilly, Va., Tuesday, April 17, 2012. After completing 39 missions and spending 365 days in space, the historic spacecraft will make its final destination at the Steven F. Udvar-Hazy Center, a Smithsonian museum, located in Chantilly, Va. on Thursday, April 19th. (Andrew Harnik/The Washington Times)
The Space shuttle Discovery does a flyby before arriving by 747 carrier aircraft at Washington Dulles International Airport, Chantilly, Va., Tuesday, April 17, 2012. After completing 39 missions and spending 365 days in space, the historic spacecraft will make its final destination at the Steven F. Udvar-Hazy Center, a Smithsonian museum, located in Chantilly, Va. on Thursday, April 19th. (Andrew Harnik/The Washington Times)
The space shuttle Discovery arrives by 747 carrier aircraft at Washington Dulles International Airport, Chantilly, Va., Tuesday, April 17, 2012. After completing 39 missions and spending 365 days in space, the historic spacecraft will make its final destination at the Steven F. Udvar-Hazy Center, a Smithsonian museum, located in Chantilly, Va. on Thursday, April 19th. (Andrew Harnik/The Washington Times)
The space shuttle Discovery, carried on the back of a jumbo jet, flies over the Washington Monument in D.C., on April 17, 2012, en route to the Smithsonian National Air and Space Museum in Chantilly, Va. (Rod Lamkey Jr./The Washington Times)
The space shuttle Discovery does a flyby before arriving by 747 carrier aircraft at Washington Dulles International Airport, Chantilly, Va., Tuesday, April 17, 2012. After completing 39 missions and spending 365 days in space, the historic spacecraft will make its final destination at the Steven F. Udvar-Hazy Center, a Smithsonian museum, located in Chantilly, Va., on Thursday, April 19. (Andrew Harnik/The Washington Times)
The space shuttle Discovery does a flyby before arriving by 747 carrier aircraft at Washington Dulles International Airport, Chantilly, Va., Tuesday, April 17, 2012. After completing 39 missions and spending 365 days in space, the historic spacecraft will make its final destination at the Steven F. Udvar-Hazy Center, a Smithsonian museum, located in Chantilly, Va., on Thursday, April 19. (Andrew Harnik/The Washington Times)
The space shuttle Discovery does a flyby before arriving by 747 carrier aircraft at Washington Dulles International Airport, Chantilly, Va., Tuesday, April 17, 2012. After completing 39 missions and spending 365 days in space, the historic spacecraft will make its final destination at the Steven F. Udvar-Hazy Center, a Smithsonian museum, located in Chantilly, Va., on Thursday, April 19. (Andrew Harnik/The Washington Times)
The space shuttle Discovery does a flyby before arriving by 747 carrier aircraft at Washington Dulles International Airport, Chantilly, Va., Tuesday, April 17, 2012. After completing 39 missions and spending 365 days in space, the historic spacecraft will make its final destination at the Steven F. Udvar-Hazy Center, a Smithsonian museum, located in Chantilly, Va., on Thursday, April 19. (Andrew Harnik/The Washington Times)
Space shuttle Discovery, atop a Boeing 747 carrier jet, departs from the Kennedy Space Center on Tuesday, April 17, 2012, in Cape Canaveral, Fla., on its way to the Smithsonian's National Air and Space Museum facility near Washington Dulles International Airport. (AP Photo/John Raoux)
