George Diller/NASA Launch Commentator: T-minus
10,
9,
8,
7,
6,
5,
4,
3,
2,
1.
Ignition.
And liftoff of the Falcon 9 to the space station,
on the first commercial launch from Kennedy
Space Center's historic pad 39A.
George Diller/NASA Launch Commentator: Vehicle
now going transonic through the
sound barrier.
Maximum dynamic pressure is reached.
