On December 4, 2025, the Pentagon’s Defence Security Cooperation Agency notified Congress of a proposed $52.8 million Foreign Military Sale to India for advanced anti-submarine sonobuoys, including technical support and manuals, fully funded by New Delhi. This tranche equips India’s MH-60R Seahawk helicopters—inducted since 2022—with air-launched, expendable sensors to detect underwater threats from contractors like Sparton Corporation and Undersea Sensor Systems Inc. Key actors include the US DSCA and Indian Navy, bolstering bilateral ties amid Indo-Pacific tensions. From an Indian strategic lens, it fortifies maritime security against submarine incursions in the Indian Ocean, enhancing ASW interoperability without altering regional balances or requiring US personnel in India. No offsets apply, signaling deepened Quad-era defence synergy.