A test of Britain's nuclear deterrent system ended in failure for the second time. The incident involved a $70 million Trident missile that both the US and UK have in their arsenal. Their high price ...

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London — Britain's Defense Secretary Grant Shapps sought to reassure U.K. lawmakers Wednesday that the country's nuclear deterrent weapons program was functional and ready to be called upon if needed ...

The Engineering Test Facility will provide space for prototyping, and development, of flight hardware elements of the next ...

The US Navy has highlighted the future of the US/UK seaborne nuclear deterrent by successfully launching a Trident II D5 Submarine Launched Ballistic Missile (SLBM) from the Ohio-class ballistic ...

The U.S. Navy carried out four scheduled missile tests of a nuclear-capable weapons system off the coast of Florida last week, according to the service. The service's Strategic Systems Programs ...

Add Yahoo as a preferred source to see more of our stories on Google. An unarmed Trident II D5 Life Extension missile launches from an Ohio-class ballistic missile submarine off the coast of Florida ...

TWO TRIDENTS: With the Aug. 25 launch of two Trident II D5 Fleet Ballistic Missiles (FMBs), the U.S. Navy is celebrating 124 consecutive successful test launches since 1989. It is a record Trident II ...