United States military submarines are a crucial component to the country's nuclear triad, wielding the ability to launch nuclear ballistic missiles from sea.

The service's Strategic Systems Programs conducted flights of unarmed Trident II D5 Life Extension missiles ... the release said. "Our Nation's submarine launched ballistic missile system has been a ...

What caused a British-operated Trident II D5 submarine-launched ballistic missile (SLBM) to go off course? British media reports that a Trident II SLBM launched from HMS Vengeance—a Vanguard-class ...

LMT's Trident II D5 is a highly accurate submarine-launched ballistic missile weapon. The missile is currently deployed on Ohio-class and UK Vanguard-class submarines and will continue to be in ...

The global defense technology firm will expand in Titusville having been awarded a U.S. Navy contract to develop next-gen ballistic missile. Lockheed Martin will invest $140 million to build an ...