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Aegis Ballistic Missile Defense System

Aegis Ballistic Missile Defense

Aegis Ballistic Missile Defense (BMD) is the sea-based component of the Missile Defense Agency’s Ballistic Missile Defense System (BMDS). Aegis BMD builds upon the Aegis Weapon System, Standard Missile, Navy and joint forces’ Command, Control and Communication systems. The Commander, Operational Test and Evaluation Force, formally found Aegis BMD to be operationally effective and suitable. The Navy embraces BMD as a core mission. In recognition of its scalability, Aegis BMD/SM-3 system is a keystone in the Phased Adaptive Approach (PAA) for missile defense in Europe.

Regional Defense – Aegis BMD Engagement Capability

  • Defeats short- to intermediate-range, unitary and separating, midcourse-phase, ballistic missile threats with the Standard Missile-3 (SM-3), as well as short-range ballistic missiles in the terminal phase with the SM-2.
  • Flight tests are conducted by Fleet warships. Each test increases the operational realism and complexity of targets and scenarios and is witnessed by Navy and Defense Department testing evaluators.

Homeland Defense – Aegis BMD Long Range Surveillance and Track

  • Aegis BMD ships on Ballistic Missile Defense patrol, detect and track ballistic missiles of all ranges – including Intercontinental Ballistic Missiles and report track data to the missile defense system. This capability shares tracking data to cue other missile defense sensors and provides fire control data to Ground-based Midcourse Defense interceptors located at Fort Greely, Alaska and Vandenberg Air Force Base, Calif. and other elements of the BMDS including land-based firing units (Terminal High Altitude Area Defense, Patriot) and other Navy BMD ships.


  • As of November 2012, there are 26 Aegis BMD combatants (5 cruisers [CGs] and 21 destroyers [DDGs]) in the U.S. Navy. Of the 26 ships, 16 are assigned to the Pacific Fleet and 10 to the Atlantic Fleet. In response to the increasing demand for Aegis BMD capability from the Combatant Commanders, the MDA and Navy are working together to increase the number of Aegis BMD capable ships. Such efforts consist of upgrading Aegis DDGs to the BMD capability, incorporating Aegis BMD into the Aegis Modernization Program and new construction of Aegis BMD DDGs.
  • The first deployment of European PAA Phase I capabilities came on March 7, 2011, when the Aegis BMD cruiser, USS MONTEREY (CG-61), armed with SM-3 Block IA missiles, deployed to Europe.

International Efforts

  • Aegis BMD is the first missile defense capability produced by the MDA that has been purchased by a military ally. Japan’s four KONGO Class Destroyers have been upgraded with BMD operational capabilities.
  • SM-3 Cooperative Development Program is the joint U.S.-Japan development of a 21-inch diameter variant of the SM-3 missile, designated SM-3 Block IIA, to defeat longer range ballistic missiles.  Deployment begins in 2018.

Future Capabilities

  • Engagement of longer range ballistic missiles.
  • Improving existing early intercept capability.
  • Enhanced terminal capability against short and medium range ballistic missiles.
  • Aegis Ashore.
  • Increased number of ships and missiles.
  • More maritime ally involvement.

Deployed Ships


Pearl Harbor, HI: USS Chafee, USS Chosin, USS Chung-Hoon, USS Crommelin, USS Halsey, USS Hopper, USS Lake Erie, USS Michael Murphy, USS O'Kane, USS Paul Hamilton, USS Port Royal, USS Reuben James

San Diego, CA: USS Anchorage, USS Benfold, USS Boxer, USS Bunker Hill, USS Cape St. George, USS Champion, USS Chancellorsville, USS Chief, USS Comstock, USS Cowpens, USS Decatur, USS Devastator, USS Dewey, USS Essex, USS Fort Worth, USS Freedom, USS Gary, USS Green Bay, USS Gridley, USS Harpers Ferry, USS Higgins, USS Howard, USS Independence, USS John Paul Jones, USS Kidd, USS Lake Champlain, USS Markin Island, USS McClusky, USS Milius, USS Mobile Bay, USS New Orleans, USS Pearl Harbor, USS Peleliu, USS Pinckney, USS Pioneer, USS Preble, USS Princeton, USS Rentz, USS Rushmore, USS Russell, USS Sampson, USS San Diego, USS Sentry, USS Spruance, USS Sterett, USS Stockdale, USS Thach, USS Vandegrift, USS Wayne E. Meyer, USS Warrior, USS William P. Lawrence

Everett, WA: USS Ford, USS Ingraham, USS Momsen, USS Rodney M. Davis, USS Shoup

Manama, Bahrain: USS Ardent, USS Dextrous, USS Gladiator, USS Scout

Sasebo, Japan: USS Avenger, USS Bonhomme Richard,USS Defender, USS Denver, USS Germantown, USS Patriot, USS Tortuga

Yokosuka, Japan: USS Antietam, USS Blue Ridge, USS Curtis Wilbur, USS Fitzgerald, USS John S. McCain, USS Lassen, USS McCampell, USS Mustin, USS Shiloh, USS Stethem


Norfolk, VA: USS Arleigh Burke, USS Barry, USS Cole, USS Donald Cook, USS Laboon, USS Mahan, USS Monterey, USS Ramage, USS Ross, USS Stout, USS Vella Gulf

Mayport, FL: USS The Sullivans, USS Carney

Ships to be Upgraded to Aegis BMD: USS Mitscher (2013), USS Porter (2013), USS McFaul (2014), USS Gonzales (2014)

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