The D5 Missile, officially known as the Trident II, is a submarine-launched ballistic missile (SLBM) developed by Lockheed Martin for the United States Navy. It is designed to carry nuclear warheads and has a range of over 7,000 miles, allowing it to strike targets far from its launch point. The D5 is deployed on Ohio-class submarines, providing a key component of the U.S. nuclear deterrent strategy. First introduced in the late 1980s, the D5 Missile has undergone several upgrades to enhance its accuracy and reliability. It features multiple independently targetable reentry vehicles (MIRVs), enabling it to deliver multiple warheads to different targets simultaneously. The D5 remains a critical element of the U.S. strategic defense system.