Owen Cote, a principal research scientist with the program, passed away on June 8, 2024. Owen joined SSP in 1997 as Associate Director, a role he has held ever since. Owen was an indomitable scholar and leading expert on both naval warfare and nuclear weapons. His monograph, The Third Battle: Innovation in the U.S. Navy's Silent Cold War Struggle with Soviet Submarines, is the definitive work on the subject. Within SSP, he mentored several generations of graduate students and postdoctoral fellows on all aspects of military technology and the implications for international security. More broadly, he shaped and guided the field of security studies as Co-Editor and later Editor of International Security. Beyond his scholarship, Owen’s humor, wit, and banter enlivened the program. He will be deeply missed by us all.