The Air Force and Lockheed Martin announced their first test of a new reentry vehicle that is planned to go atop the Sentinel intercontinental ballistic missile. The operational test launch of an unarmed Mk21A took place late June 17 at Vandenberg Space Force Base, Calif. ...
The Air Force has given Lockheed Martin a $996 million contract to produce a reentry vehicle (RV) for its new Sentinel intercontinental ballistic missile by Oct. 20, 2039.