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Media/Public Contact: T_Outreach_PM@state.gov
Transmittal No. 26-10
WASHINGTON, December 16, 2025 - The State Department has made a determination approving a possible Foreign Military Sale to the Government of Japan for Aegis Class Destroyer Support and related equipment for an estimated cost of $100.2 million. The Defense Security Cooperation Agency delivered the required certification notifying Congress.
The Government of Japan has requested to buy follow-on technical support of Aegis class destroyers, including Combat Systems Sea Qualification Trials (CSSQT); test and evaluation services; sustainment support and services; Aegis computer software updates; systems integration and testing, in-country and on-site engineering support; all necessary emergent engineering and technical support services; familiarization, operational support; system overhauls; system upgrades; on-the-job practical operations and maintenance; combat systems integration; development, testing, and installation of program patches; adaptation data and annual service agreements; fielding technical inquiries by the purchaser; operational integration and maintenance support; field service engineering; problem investigation; technical assistance; support solutions to technical problems arising from post-production; testing capabilities; supporting U.S. Government contractors and technical engineers; and other related elements of logistics and program support. The estimated total cost is $100.2 million.
This proposed sale will support the foreign policy goals and national security objectives of the United States by improving the security of a major ally that is a force for political stability and economic progress in the Indo-Pacific.
The proposed sale will improve Japan’s capability to meet current and future threats by ensuring Japan Maritime Self Defense Force’s (JMSDF) Aegis fleet remains ready to provide critical capabilities in the defense of Japan. Specifically, the requested CSSQT services will provide JSMDF with capability support that is vital to the effective and safe operations of the Aegis Combat Systems (ACS) suite. Japan continues to modernize its fleet to support Integrated Air and Missile Defense (IAMD) roles and special mission requirements. The JMSDF Aegis Fleet will fulfill Japan’s mission goal of acquiring and maintaining their Aegis capable ships and will further enhance interoperability with the U.S. Navy, build upon a longstanding cooperative effort with the United States, and provide enhanced capability with a valued partner in a geographic region of critical importance to Japan and the U.S. Government. The Aegis destroyers in Japan’s fleet afford greater flexibility and capability to counter regional threats and to enhance stability in the region. Japan currently operates Aegis ships, is proficient at using their evolving ballistic missile defense capability, and is effective at employing the AN/SQQ-89A(V)15J undersea warfare combat system for undersea surveillance and detection. Japan will have no difficulty absorbing these services into its armed forces.
The proposed sale of this equipment and support will not alter the basic military balance in the region.
The principal contractor will be Lockheed Martin Corporation, located in Moorestown, NJ.
At this time, the U.S. Government is not aware of any offset agreement proposed in connection with this potential sale. Any offset agreement will be defined in negotiations between the purchaser and the contractor.
Implementation of this proposed sale will not require the assignment of any additional U.S. Government or contractor representatives to Japan.
There will be no adverse impact on U.S. defense readiness as a result of this proposed sale.
The description and dollar value are for the highest estimated quantity and dollar value based on initial requirements. Actual dollar value will be lower depending on final requirements, budget authority, and signed sales agreement(s), if and when concluded.
All questions regarding this proposed Foreign Military Sale should be directed to the State Department's Under Secretary of State for Arms Control and International Security, Political-Military Affairs Outreach, at T_Outreach_PM@state.gov.