A crane lifts a space shuttle replica to be place atop the Shuttle Carrier Aircraft (SCA) Thursday morning, Aug. 14, 2014, at NASAÂ’s Johnson Space Center in Houston. The old Boeing 747 formerly transported shuttles piggyback to Florida following flights. Visitors will be allowed to enter both vehicles when the permanent exhibit opens in 2015. (AP Photo/Conroe Courier, Kar B Hlava)
