Article Title: Russian Rocket Engines once used by the United States
Snippet of Article: "RD-180
• The RD-180 engine, manufactured by NPO Energomash of Russia and marketed in the U.S. by RD AMROSS (a joint venture between Pratt & Whitney and NPO Energomash), is used by United Launch Alliance (a joint venture of Lockheed Martin Corporation and The Boeing Company), as the first stage engine to power the Atlas V rocket.
...RD-181
• The RD-181 engine, manufactured by NPO Energomash, is used by Orbital Sciences Corporation to power its Antares rocket on resupply missions to the International Space Station. ..."
Source: www.spacefoundation.org