Air Force awards Lockheed $1 billion for new ICBM reentry vehicle
The new Mk21A reentry vehicle will be mounted atop the Sentinel intercontinental ballistic missile and will carry an updated nuclear warhead known as the W87-1.
The new Mk21A reentry vehicle will be mounted atop the Sentinel intercontinental ballistic missile and will carry an updated nuclear warhead known as the W87-1.