122 years ago today, the US commissioned its first submarine. Today, submarines are a key aspect of national security and nuclear deterrence. The Navy funds a good part of MOD’s work, in part because our ocean understanding and measurement techniques help submarines operate more safely and effectively. As an example, MOD scientists Matthew Alford and Drew Lucas, together with a number of former Scripps students including Oliver Sun, Maddie Harvey and Adrian Doran, participated last week in a colloquium of submarine operators, acousticians and oceanographers from academia and the Navy. These collaborations are strengthening the connections between academia and the many submariners who bravely work beneath the sea surface, for whose service we are grateful.