1. In production. 2. Operational service of the Trident II to reach 2040. 3. U.S to procure improved D-5A missile. 4. An all-new SLBM will not be deployed before 2020. 5. A new submarine-launched intermediate-range ballistic missile (SLIRBM) could provide the U.S. Navy with a complement to its Tomahawk cruise missiles.
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