Aegis BMD has worked closely with
Japan since 1999 to design and develop advanced components for the SM-3 missile.
In December 2003, through a formal Cabinet Decision, the Government of Japan became the first ally to decide to proceed with the acquisition of a multi-layered BMD system, basing its initial capability on upgrades of its Aegis Destroyers and acquisition of the SM-3 missile. The two nations began the research program in 1999 for a system to launch interceptors from Aegis destroyers. Japan has spent 15.6 billion yen up to fiscal 2003. The AEGIS Weapon System and Standard missiles will be used on JMSDF ships and will provide, in concert with JSDF PAC-3 Patriot missiles, the initial ballistic missile defense for mainland Japan. Japan already has the upgraded AEGIS Weapon System and SM-3 Block IA Standard missiles in its inventory and will have no difficulty absorbing the additional upgraded Weapon System and missiles.
On 5 May 2004, the Defense Security Cooperation Agency notified Congress of a possible Foreign Military Sale to Japan of SM-3 Block 1A Standard Missiles as well as associated equipment and services. The total value, if all options are exercised, could be as high as $725 million. The Government of Japan has requested a possible sale of nine SM-3 Block 1A Standard missiles with MK 21 Mod 2 canisters, Ballistic Missile Defense (BMD) upgrades to one AEGIS Weapon System, AEGIS BMD Vertical Launch System ORDALTs, containers, spare and repair parts, supply support, U.S. Government and contractor technical assistance and other related elements of logistics support. Japan will use the Standard missiles to update older or less reliable missiles currently in the Japan Maritime Self Defense Force (JMSDF) fleet. The AEGIS Weapon System and Standard missiles will be used on JMSDF ships. The purchaser, who already has missiles in its inventory, will have no difficulty absorbing these additional missiles.
On 29 June 2005, the Defense Security Cooperation Agency notified Congress of a possible Foreign Military Sale to Japan of nine SM-3 Block IA Standard missiles with MK 21 Mod 2 canisters, as well as associated equipment and services. The total value, if all options are exercised, could be as high as $387 million. The Government of Japan has requested a possible sale of nine SM-3 Block IA Standard missiles with MK 21 Mod 2 canisters, Ballistic Missile Defense (BMD) upgrades to one AEGIS Weapon System, AEGIS BMD Vertical Launch System ORDALTs, containers, spare and repair parts, publications, documentation, supply support, U.S. Government and contractor technical assistance and other related elements of logistics support. The estimated cost is $387 million.
http://www.globalsecurity.org/space/systems/sm3-japan.htm