The United States Navy conducted four scheduled test flights of unarmed missiles from a ballistic missile submarine off the coast of Southern California the mornings of Sept. 4 and 6.
The launches indicate 176 successful flights of the Trident II (D5) strategic weapon system.
The test flights were part of a Commander Evaluation Test (CET), which confirms the missiles are meeting performance expectations.
"Our nation's sea-based deterrent has been a critical component of our national security since the 1960s, and this week's launches continue to demonstrate the credibility and reliability of our life-extended missiles," said Vice Adm. Johnny R. Wolfe, director of the Navy's Strategic Systems Programs, the command responsible for the U.S. Navy's strategic weapons.
CETs and other flight tests are done on a routine basis to make sure the strategic weapon system is reliable.
None of the missile launches were conducted in response to any ongoing world events.
