Anomaly occurred during the test aboard the nuclear-powered submarine HMS Vanguard. The UK Ministry of Defense assured that the launch failure does not compromise "the reliability of the Trident missile systems" It is the second time in the last eight years that the country's Trident 2 projectiles have failed during these tests.
A source told CNN that the failure was specific to the testing period and would likely have been successful if a real nuclear warhead had been used. The incident occurred on January 30 when the Trident 2 missile and the fake warhead were sent into the air.