Vice Chief of Naval Operations Adm. Jim Kilby pins Lt. j.g. Jacob Trevino with his submarine qualification - also known as "dolphins" - during a tour of General Dynamics Electric Boat (EB) shipbuilding facility in Groton, Connecticut, Oct. 29, 2024. Hartford and crew operate under Submarine Squadron (SUBRON) 12, whose primary mission is to provide fast-attack submarines that are ready, willing, and able to meet the unique challenges of undersea combat and deployed operations in unforgiving environments across the globe. Electric Boat is the prime contractor and lead design yard for the Navy's Virginia-class fast-attack submarines. (U.S. Navy photo by Gary Hodgdon)