Major System knowledge – Main/Aux Steam, Steam Drains and Gland steam, Feed and Feed Transfer, Lub Oil and Lub oil Transfer, Main Circ (MSW equivalent) and Shaft seal - This includes oversight of all valves, pumps, fittings, gauges as part of the system that are not part of the equipment group. PMS450 is the acquisition program office for the New Construction of Attack Submarines and for identifying, assembling, managing, directing, and coordinating the resources required for the R&D, design, construction, Test and Evaluation (T&E), Live Fire Test and Evaluation (LFT&E), and Fleet introduction of the U.S. Navy’s newest class of nuclear attack submarines.