Sierra Nevada Corp. won the $13 billion contract to build the Doomsday plane's replacement, SAOC, by 2036. Boeing may be involved in modifying a Boeing 747-8 for the new Doomsday plane despite ...

The U.S. Army has awarded Sierra Nevada Corporation the contract as lead system integrator for the High Accuracy Detection and Exploitation System (HADES) program. The 12-year indefinite-delivery ...

Despite some early successes, Sierra Space, a spinout from aerospace contractor Sierra Nevada Corporation, has yet to launch a first mission of its reusable cargo spaceplane, called Dream Chaser.