SpaceShipTwo: Unprecedented access

CNN's Rachel Crane gained unprecedented access to a secure California factory where Virgin Galactic's tourism spaceships are under construction. Click through the gallery for a rare inside look at how these amazing machines are put together at this off-limits facility.

CNN's Rachel Crane gained unprecedented access to a secure California factory where Virgin Galactic's tourism spaceships are under construction. Click through the gallery for a rare inside look at how these amazing machines are put together at this off-limits facility.