A major multinational military exercise involving the United States, Australia, India, Japan and New Zealand has concluded in Guam after nearly three weeks of intensive anti-submarine warfare training designed to strengthen regional security cooperation.

Exercise Sea Dragon 2026 brought together advanced maritime patrol aircraft and aircrews from all five nations, focusing on detecting, tracking and responding to underwater threats in complex operational conditions.

Conducted at Andersen Air Force Base, the exercise ran for approximately twenty days and featured increasingly demanding scenarios, culminating in live submarine tracking operations.

Participants operated sophisticated aircraft including the P-8A Poseidon and similar platforms, carrying out coordinated missions that tested speed, precision and interoperability.

Crews progressed from simulated target tracking to real-world submarine detection, reflecting the evolving challenges of modern naval warfare in the Indo-Pacific.

The exercise also included the use of specialised training equipment such as mobile anti-submarine targets and recoverable torpedoes, enabling forces to refine tactical responses in realistic environments.

A competitive component assessed each nation’s performance, with Japan’s maritime forces securing the top distinction for overall effectiveness.

Officials described the exercise as a key demonstration of allied readiness and unity, reinforcing shared capabilities and mutual trust among participating forces.

The collaboration highlights the growing importance of joint operations as regional partners work together to ensure stability and maintain secure maritime routes across the Indo-Pacific.

Australia’s contribution, including aircraft deployment and skilled personnel, underscored its strong commitment to regional defence partnerships and operational excellence.

The country continues to play a central role in advancing coordinated security efforts alongside its strategic partners.

Held annually since twenty nineteen, Sea Dragon has become a cornerstone of multinational defence cooperation, providing a platform for allied forces to enhance their operational integration and respond effectively to emerging maritime challenges.