"United Launch Alliance, a joint venture of Lockheed Martin and Boeing, on Friday said it cannot bid in a U.S. Air Force competition to launch a GPS satellite unless it gets some relief from a ban on use of Russian rocket engines. ULA Chief Executive Officer Tory Bruno told reporters in Cape Canaveral, Florida, that the company was seeking a partial waiver on trade sanctions enacted last year that ban U.S. military use of the Russian RD-180 engine that powers ULA's primary workhorse Atlas 5 rocket. The issue is now in the hands of Defense Secretary Ash Carter, Bruno said. Without the waiver, he said, ULA could not compete for that launch or any other new national security launches until a new American-built engine is ready in 2019."That's not a viable business model," he told reporters."
"ULA is facing a challenge from SpaceX, the hard-charging upstart founded by billionaire entrepreneur Elon Musk, which just won certification by the Air Force that would allow it to compete against ULA for the next Pentagon launch contract. And ULA faces an even bigger problem: the Russian-made rocket engine it relies on has been entangled in a messy political fight that could threaten its ability to compete at all."