To direct the Secretary of Defense to establish a working group to develop and coordinate an artificial intelligence initiative among the Five Eyes countries, and for other purposes.

HR 6425 directs the U.S. Secretary of Defense, with the Director of National Intelligence, to create the "Five AIs Strategic Artificial Intelligence Working Group" within 90 days. This group will coordinate AI efforts among the Five Eyes countries (U.S., UK, Canada, Australia, New Zealand) focused on defense and intelligence applications. Key tasks include comparing AI systems and practices, developing shared strategies for interoperability, testing AI model redundancy, and managing data for joint AI use. The working group must submit a plan within 60 days and biannual reports to Congress, terminating on September 30, 2028, unless extended for national security reasons.