[…]
WhiteKnight, a three-fuselage, four-engine plane in its new incarnation, will ferry the smaller spacecraft high into the sky and release it. The spacecraft pilot then fires the craft’s rocket engine, which burns a combination of nitrous oxide and a rubber-based solid fuel, and shoots the vehicle upward to an altitude of more than 62 miles, the realm of black sky.

Once there, the pilot is to activate the craft’s innovative feathered wing, which rotates into a position that greatly increases aerodynamic drag and slows the craft for a glider landing back on earth.
[…]

It’s a short flight, but it’s expensive…

I’m sure there will be plenty of takers anyhow.