Thursday, April 18, 2013 8:50 PM local time (5:50 AM, April 18, 2013 in Freedom City) Somewhere over the South Pacific   GM   The still night sky over the South Pacific was briefly disrupted by the sleek form of an advanced hypersonic transport as it streaked through the thin air at high altitude.  Designed with stealth in mind, the transport was nearly impossible to detect by conventional mean, which allowed it to follow a rather direct route to its destination.   Inside the aircraft’