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Lockheed Martin Completes Flight Test of Mk21A Reentry Vehicle for Sentinel ICBM Nuclear Warheads
Lockheed Martin and the US Air Force have flight-tested the Mk21A reentry vehicle that will carry the W87-1 warhead on Sentinel. The…

Lockheed Martin and the US Air Force have flight-tested the Mk21A reentry vehicle that will carry the W87-1 warhead on Sentinel. The…