A joint naval demonstration called Maritime Big Play Pacific is taking place off the coast of Southern California, organized under the trilateral AUKUS partnership between the US, Australia, and the UK. The primary objective of the exercise is to strengthen operational interoperability among the armed forces of the three countries, which involves practicing unified standards for interaction, data exchange, and coordination of actions between the allies' fleets. AUKUS is a defense agreement concluded in 2021 that covers a wide range of cooperation areas, including the development of nuclear submarines for Australia as well as the advancement of cutting-edge military technology. Naval demonstrations of this kind are considered an important element in the practical implementation of agreements, allowing partners to test their readiness for joint operations in the Indo-Pacific region. The conduct of exercises off the California coast underscores the strategic importance of the Pacific direction for the trilateral alliance. It is expected that similar exercises will be held on a regular basis as military-technical cooperation among the parties to the pact deepens.