The Orbital Space Plane will be built by the usual suspects.

NASA/MSFC intends to negotiate additional scope under existing contracts, and solicit and consider proposals under a limited competition, only with the Lockheed Martin Corporation, The Boeing Company and a team consisting of the Northrop Grumman Corporation and the Orbital Sciences Corporation, for the design, development, test, delivery, and flight certification of an Orbital Space Plane (OSP).

And so another multi-billion-dollar boondoggle begins…