Boeing Completes Silo Tests: Boeing has successfully tested the modified underground silo and launch system components for the Ground-based Midcourse Defense (GMD) interceptor, clearing the way for the system’s upcoming flight test this summer. Company officials say the tests validated several modifications, including operation of the lateral support group and the opening of the silo closure mechanism. A series of six live fire tests that trigger the launch sequence of the support group arms and the opening of the silo “clamshell doors” was first conducted on the test silo in Huntsville, Ala., and verified at the Ronald Reagan Missile Defense Site at Vandenberg AFB, Calif.
The Air Force awarded a $13.08 billion contract to the Sierra Nevada Corporation on April 26 for its Survivable Airborne Operations Center aircraft, the successor to the service’s E-4B “Doomsday” plane. Like the E-4B, officially called the National Airborne Operations Center, the SAOC will be meant to withstand a nuclear attack and keep…