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Jeff Bezos, founder of the online retailing giant Amazon​.com, has unveiled a new commercial engine design for legacy military rockets.

Bezos, who also heads up the private spaceflight company Blue Origin LLC, was on hand with Tony Bruno, the new chief executive officer of the Lockheed Martin Corp.-Boeing Co. joint venture, United Launch Alliance LLC, on Wednesday at the National Press Club to announce an agreement to jointly fund development of the BE-4 engine.

The engine is designed to provide 550,000 pounds of thrust and replace the Russian-made RD-180 propulsion system currently on the Atlas V rocket, one of two boosters used by the Air Force’s Evolved Expendable Launch Vehicle program to lift military and spy satellites into space.

via Bezos Unveils New Engine for Military Rockets | Defense Tech.

I just need to convince the Air Force to buy the motor through my Amazon link in the right sidebar.

The BE-4 has something I’ve never seen before. I’ve seen LOX/kerosene engines. And I’ve seen LOX/Hydrogen cryo engines. But I’ve never seen a proposal for a LOX/LNG engine.