NPO Energomash
During the early 1990s, General Dynamics Space Systems Division (later purchased by Lockheed Martin) acquired the rights to use the RD-180 in the Evolved Expendable Launch Vehicle (EELV) and the Atlas program. As these programs were conceived to support United States Government launches, as well as commercial launches, it was also arranged for the RD-180 to be co-produced by Pratt &amp; Whitney. However, all production to date has taken place in Russia. The engine is currently sold by a joint venture between the Russian developer and producer of the engine NPO Energomash and Pratt &amp; Whitney, called RD Amross.