"Lockheed Martin has been selected by the U.S.
Air Force for a contract award to support the
Reusable Booster System (RBS) Flight and
Ground Experiments program.

The value of the first task order is $2 million, with
a contract ordering value of up to $250 million over
the five-year indefinite-delivery/indefinite-quantity
contract period.

The Air Force Research Laboratory (AFRL) and
the Air Force Space and Missile Systems Center
are developing the RBS as the next generation
launch vehicle that will significantly improve the
affordability, operability, and responsiveness of
future spacelift capabilities over current expendable
launchers."

See:

http://www.defencetalk.com/lockheed-...-system-38735/