Australia has initiated a comprehensive upgrade program for its Royal Australian Air Force (RAAF) P-8A Poseidon fleet, marking a significant enhancement in maritime surveillance and anti-submarine capabilities. This four-year Increment 3 Block 2 program will incorporate advanced antennas, sensors, and software, improving detection and communication systems, crucial for addressing rising maritime threats in the Indo-Pacific region. The upgrades will reinforce operational reach and interoperability with the US Navy’s fleet, alongside the re-establishment of a second Poseidon squadron at RAAF Base Edinburgh. These developments signal Australia’s commitment to modernizing its defense infrastructure and strengthening regional alliances, thereby enhancing its strategic posture amid a complex geopolitical landscape.