America’s Trident D5 missiles represent a bedrock of America’s national defense—meaning that they must occasionally be tested. The Trident II D5 missile, officially designated the UGM-133A, was ...

Lockheed Martin will produce and support the deployment of Trident II ballistic missiles for the U.S. Navy and foreign military sales customers, the United Kingdom. Challenges surrounding foreign ...

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 ...

The Sunday Times newspaper, citing a senior naval source, claimed that the Trident II D5 missile failed after being launched from a British submarine off the coast of Florida in June. The British ...