Wake me up when it finally gets off the ground.
Then a few years later, wake me up again when (if?) it launches the kind of big orbital rocket it was designed for (which currently does not exist, at least not soon).
Carrying up three little "flea" Pegasus rockets on this huge plane doesn't make much sense to me. The Pegasus was originally launched by a B-52, then once proven (And NASA retired their last B-52 - #008), it has been launched highly successfully by a modified L-1011 owned by Orbital.