Strategic weapons are tested regularly, except for the warhead. The Trident II D5 has had about 200 tests in the last 35 years. That's about the same number of

Strategic weapons are tested regularly, except for the warhead. The Trident II D5 has had about 200 tests in the last 35 years. That's about the same number of test missiles expended as are actively deployed at any given time. While there are a theoretical maximum of 344 deployed at any one time (14 Ohio-class, each with 20 tubes, plus 4 Vanguard-class with 16 tubes) some number of those boats are unarmed in refit at any given time.