Much at Stake for Proton, Antares as September 15 Nears, Space Policy Online
"Purely by coincidence, if all goes according to plan September 15 will be a big day for a venerable Russian rocket recovering from a recent spectacular failure as well as a new U.S. rocket that is powered by Russian engines. A lot is at stake for both.
... A successful Proton launch could help restore confidence in the Russian space launch industry. A failure would add to the gloom and potentially drive commercial customers to competitors like Ariane, Sea Launch, and SpaceX.
Quite separately, the U.S. company Orbital Sciences Corporation is targeting September 15 for the first launch of its new Antares rocket to the International Space Station (ISS). Antares will launch Orbital's Cygnus cargo spacecraft to the ISS as part of NASA's commercial cargo program."