
COLORADO SPRINGS, Colo.--Boeing [BA] is open to using rival launch vehicles for its Cargo Resupply Services-2 (CRS-2) offering for NASA, including rockets supplied by international companies.Boeing Vice President and General Manager of Space Exploration John Elbon said Wednesday the company did respond to NASA's CRS-2 request for proposal, which could be worth as much as $14 billion with all options exercised. Elbon said Boeing would use one of United Launch Alliance's (ULA) Atlas V launch vehicles in the near term,…